/*----------------------------------------------------------------------------/
-/ FatFs - FAT file system module R0.07e (C)ChaN, 2010
+/ FatFs - FAT file system module R0.08b (C)ChaN, 2011
/-----------------------------------------------------------------------------/
/ FatFs module is a generic FAT file system module for small embedded systems.
/ This is a free software that opened for education, research and commercial
-/ developments under license policy of following trems.
+/ developments under license policy of following terms.
/
-/ Copyright (C) 2010, ChaN, all right reserved.
+/ Copyright (C) 2011, ChaN, all right reserved.
/
/ * The FatFs module is a free software and there is NO WARRANTY.
/ * No restriction on use. You can use, modify and redistribute it for
/
/ Jun 01,'06 R0.02 Added FAT12 support.
/ Removed unbuffered mode.
-/ Fixed a problem on small (<32M) patition.
+/ Fixed a problem on small (<32M) partition.
/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
/
/ Sep 22,'06 R0.03 Added f_rename().
/ Changed option _FS_MINIMUM to _FS_MINIMIZE.
-/ Dec 11,'06 R0.03a Improved cluster scan algolithm to write files fast.
+/ Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast.
/ Fixed f_mkdir() creates incorrect directory on FAT32.
/
/ Feb 04,'07 R0.04 Supported multiple drive system.
/ Changed some interfaces for multiple drive system.
/ Changed f_mountdrv() to f_mount().
/ Added f_mkfs().
-/ Apr 01,'07 R0.04a Supported multiple partitions on a plysical drive.
+/ Apr 01,'07 R0.04a Supported multiple partitions on a physical drive.
/ Added a capability of extending file size to f_lseek().
/ Added minimization level 3.
/ Fixed an endian sensitive code in f_mkfs().
/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().
/ Fixed off by one error at FAT sub-type determination.
/ Fixed btr in f_read() can be mistruncated.
-/ Fixed cached sector is not flushed when create and close
-/ without write.
+/ Fixed cached sector is not flushed when create and close without write.
/
/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
-/ Improved performance of f_lseek() on moving to the same
-/ or following cluster.
+/ Improved performance of f_lseek() on moving to the same or following cluster.
/
-/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a buffer configuration option.
-/ Added long file name support.
-/ Added multiple code page support.
+/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a configuration option. (_FS_TINY)
+/ Added long file name feature.
+/ Added multiple code page feature.
/ Added re-entrancy for multitask operation.
/ Added auto cluster size selection to f_mkfs().
/ Added rewind option to f_readdir().
/ Changed result code of critical errors.
/ Renamed string functions to avoid name collision.
/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
-/ Added multiple sector size support.
+/ Added multiple sector size feature.
/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
/ Fixed wrong cache control in f_lseek().
/ Added relative path feature.
/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
/ Fixed name matching error on the 13 char boundary.
/ Added a configuration option, _LFN_UNICODE.
-/ Changed f_readdir() to return the SFN with always upper
-/ case on non-LFN cfg.
+/ Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
+/
+/ May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN = 3)
+/ Added file lock feature. (_FS_SHARE)
+/ Added fast seek feature. (_USE_FASTSEEK)
+/ Changed some types on the API, XCHAR->TCHAR.
+/ Changed fname member in the FILINFO structure on Unicode cfg.
+/ String functions support UTF-8 encoding files on Unicode cfg.
+/ Aug 16,'10 R0.08a Added f_getcwd(). (_FS_RPATH = 2)
+/ Added sector erase feature. (_USE_ERASE)
+/ Moved file lock semaphore table from fs object to the bss.
+/ Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'.
+/ Fixed f_mkfs() creates wrong FAT32 volume.
+/ Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write().
+/ f_lseek() reports required table size on creating CLMP.
+/ Extended format syntax of f_printf function.
+/ Ignores duplicated directory separators in given path names.
/---------------------------------------------------------------------------*/
#include "ff.h" /* FatFs configurations and declarations */
#include "diskio.h" /* Declarations of low level disk I/O functions */
+
/*--------------------------------------------------------------------------
Module Private Definitions
---------------------------------------------------------------------------*/
-#if _FATFS != 0x007E
+#if _FATFS != 8237
#error Wrong include file (ff.h).
#endif
+
+/* Definitions on sector size */
+#if _MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096
+#error Wrong sector size.
+#endif
+#if _MAX_SS != 512
+#define SS(fs) ((fs)->ssize) /* Multiple sector size */
+#else
+#define SS(fs) 512U /* Fixed sector size */
+#endif
+
+
+/* Reentrancy related */
#if _FS_REENTRANT
#if _USE_LFN == 1
#error Static LFN work area must not be used in re-entrant configuration.
#endif
#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
-
#else
#define ENTER_FF(fs)
#define LEAVE_FF(fs, res) return res
-
#endif
#define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }
-#ifndef NULL
-#define NULL 0
+
+/* File shareing feature */
+#if _FS_SHARE
+#if _FS_READONLY
+#error _FS_SHARE must be 0 on read-only cfg.
+#endif
+typedef struct {
+ FATFS *fs; /* File ID 1, volume (NULL:blank entry) */
+ DWORD clu; /* File ID 2, directory */
+ WORD idx; /* File ID 3, directory index */
+ WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:write mode */
+} FILESEM;
+#endif
+
+
+/* Misc definitions */
+#define LD_CLUST(dir) (((DWORD)LD_WORD(dir+DIR_FstClusHI)<<16) | LD_WORD(dir+DIR_FstClusLO))
+#define ST_CLUST(dir,cl) {ST_WORD(dir+DIR_FstClusLO, cl); ST_WORD(dir+DIR_FstClusHI, (DWORD)cl>>16);}
+
+
+/* DBCS code ranges and SBCS extend char conversion table */
+
+#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
+#define _DF1S 0x81 /* DBC 1st byte range 1 start */
+#define _DF1E 0x9F /* DBC 1st byte range 1 end */
+#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
+#define _DF2E 0xFC /* DBC 1st byte range 2 end */
+#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
+#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
+#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
+#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
+
+#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0x80
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 949 /* Korean */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x41
+#define _DS1E 0x5A
+#define _DS2S 0x61
+#define _DS2E 0x7A
+#define _DS3S 0x81
+#define _DS3E 0xFE
+
+#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0xA1
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 437 /* U.S. (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 720 /* Arabic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 737 /* Greek (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
+ 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 775 /* Baltic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
+
+#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
+ 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
+ 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 857 /* Turkish (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 862 /* Hebrew (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 866 /* Russian (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
+
+#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
+ 0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF}
+
+#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
+
+#elif _CODE_PAGE == 1253 /* Greek (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \
+ 0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF}
+
+#elif _CODE_PAGE == 1254 /* Turkish (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
+
+#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1256 /* Arabic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1257 /* Baltic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
+
+#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F}
+
+#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
+#if _USE_LFN
+#error Cannot use LFN feature without valid code page.
#endif
+#define _DF1S 0
+
+#else
+#error Unknown code page
+
+#endif
+
+
+/* Character code support macros */
+#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
+#define IsLower(c) (((c)>='a')&&((c)<='z'))
+#define IsDigit(c) (((c)>='0')&&((c)<='9'))
+
+#if _DF1S /* Code page is DBCS */
+
+#ifdef _DF2S /* Two 1st byte areas */
+#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
+#else /* One 1st byte area */
+#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
+#endif
+
+#ifdef _DS3S /* Three 2nd byte areas */
+#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
+#else /* Two 2nd byte areas */
+#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
+#endif
+
+#else /* Code page is SBCS */
+
+#define IsDBCS1(c) 0
+#define IsDBCS2(c) 0
+
+#endif /* _DF1S */
+
/* Name status flags */
-#define NS 11 /* Offset of name status byte */
+#define NS 11 /* Index of name status byte in fn[] */
#define NS_LOSS 0x01 /* Out of 8.3 format */
#define NS_LFN 0x02 /* Force to create LFN entry */
#define NS_LAST 0x04 /* Last segment */
#define NS_DOT 0x20 /* Dot entry */
-
-
-/*--------------------------------------------------------------------------
-
- Private Work Area
-
----------------------------------------------------------------------------*/
-
-#if _DRIVES < 1 || _DRIVES > 9
-#error Number of drives must be 1-9.
-#endif
+/* FAT sub-type boundaries */
+/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
+#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
+#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
+
+
+/* FatFs refers the members in the FAT structures as byte array instead of
+/ structure member because the structure is not binary compatible between
+/ different platforms */
+
+#define BS_jmpBoot 0 /* Jump instruction (3) */
+#define BS_OEMName 3 /* OEM name (8) */
+#define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
+#define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
+#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
+#define BPB_NumFATs 16 /* Number of FAT copies (1) */
+#define BPB_RootEntCnt 17 /* Number of root dir entries for FAT12/16 (2) */
+#define BPB_TotSec16 19 /* Volume size [sector] (2) */
+#define BPB_Media 21 /* Media descriptor (1) */
+#define BPB_FATSz16 22 /* FAT size [sector] (2) */
+#define BPB_SecPerTrk 24 /* Track size [sector] (2) */
+#define BPB_NumHeads 26 /* Number of heads (2) */
+#define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
+#define BPB_TotSec32 32 /* Volume size [sector] (4) */
+#define BS_DrvNum 36 /* Physical drive number (2) */
+#define BS_BootSig 38 /* Extended boot signature (1) */
+#define BS_VolID 39 /* Volume serial number (4) */
+#define BS_VolLab 43 /* Volume label (8) */
+#define BS_FilSysType 54 /* File system type (1) */
+#define BPB_FATSz32 36 /* FAT size [sector] (4) */
+#define BPB_ExtFlags 40 /* Extended flags (2) */
+#define BPB_FSVer 42 /* File system version (2) */
+#define BPB_RootClus 44 /* Root dir first cluster (4) */
+#define BPB_FSInfo 48 /* Offset of FSInfo sector (2) */
+#define BPB_BkBootSec 50 /* Offset of backup boot sectot (2) */
+#define BS_DrvNum32 64 /* Physical drive number (2) */
+#define BS_BootSig32 66 /* Extended boot signature (1) */
+#define BS_VolID32 67 /* Volume serial number (4) */
+#define BS_VolLab32 71 /* Volume label (8) */
+#define BS_FilSysType32 82 /* File system type (1) */
+#define FSI_LeadSig 0 /* FSI: Leading signature (4) */
+#define FSI_StrucSig 484 /* FSI: Structure signature (4) */
+#define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
+#define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
+#define MBR_Table 446 /* MBR: Partition table offset (2) */
+#define SZ_PTE 16 /* MBR: Size of a partition table entry */
+#define BS_55AA 510 /* Boot sector signature (2) */
+
+#define DIR_Name 0 /* Short file name (11) */
+#define DIR_Attr 11 /* Attribute (1) */
+#define DIR_NTres 12 /* NT flag (1) */
+#define DIR_CrtTime 14 /* Created time (2) */
+#define DIR_CrtDate 16 /* Created date (2) */
+#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
+#define DIR_WrtTime 22 /* Modified time (2) */
+#define DIR_WrtDate 24 /* Modified date (2) */
+#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
+#define DIR_FileSize 28 /* File size (4) */
+#define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
+#define LDIR_Attr 11 /* LFN attribute (1) */
+#define LDIR_Type 12 /* LFN type (1) */
+#define LDIR_Chksum 13 /* Sum of corresponding SFN entry */
+#define LDIR_FstClusLO 26 /* Filled by zero (0) */
+#define SZ_DIR 32 /* Size of a directory entry */
+#define LLE 0x40 /* Last long entry flag in LDIR_Ord */
+#define DDE 0xE5 /* Deleted directory enrty mark in DIR_Name[0] */
+#define NDDE 0x05 /* Replacement of a character collides with DDE */
+
+
+/*------------------------------------------------------------*/
+/* Work area */
+
+#if _VOLUMES
static
-FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */
+FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */
+#else
+#error Number of drives must not be 0.
+#endif
static
WORD Fsid; /* File system mount ID */
#if _FS_RPATH
static
-BYTE Drive; /* Current drive */
+BYTE CurrVol; /* Current drive */
#endif
-
-#if _USE_LFN == 1 /* LFN with static LFN working buffer */
+#if _FS_SHARE
static
-WCHAR LfnBuf[_MAX_LFN + 1];
-#define NAMEBUF(sp,lp) BYTE sp[12]; WCHAR *lp = LfnBuf
-#define INITBUF(dj,sp,lp) dj.fn = sp; dj.lfn = lp
+FILESEM Files[_FS_SHARE]; /* File lock semaphores */
+#endif
+
+#if _USE_LFN == 0 /* No LFN */
+#define DEF_NAMEBUF BYTE sfn[12]
+#define INIT_BUF(dobj) (dobj).fn = sfn
+#define FREE_BUF()
-#elif _USE_LFN > 1 /* LFN with dynamic LFN working buffer */
-#define NAMEBUF(sp,lp) BYTE sp[12]; WCHAR lbuf[_MAX_LFN + 1], *lp = lbuf
-#define INITBUF(dj,sp,lp) dj.fn = sp; dj.lfn = lp
+#elif _USE_LFN == 1 /* LFN with static LFN working buffer */
+static WCHAR LfnBuf[_MAX_LFN+1];
+#define DEF_NAMEBUF BYTE sfn[12]
+#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
+#define FREE_BUF()
-#else /* No LFN */
-#define NAMEBUF(sp,lp) BYTE sp[12]
-#define INITBUF(dj,sp,lp) dj.fn = sp
+#elif _USE_LFN == 2 /* LFN with dynamic LFN working buffer on the stack */
+#define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1]
+#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
+#define FREE_BUF()
+#elif _USE_LFN == 3 /* LFN with dynamic LFN working buffer on the heap */
+#define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn
+#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \
+ if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \
+ (dobj).lfn = lfn; (dobj).fn = sfn; }
+#define FREE_BUF() ff_memfree(lfn)
+
+#else
+#error Wrong LFN configuration.
#endif
/* Copy memory to memory */
static
-void mem_cpy (void* dst, const void* src, int cnt) {
- char *d = (char*)dst;
- const char *s = (const char *)src;
- while (cnt--) *d++ = *s++;
+void mem_cpy (void* dst, const void* src, UINT cnt) {
+ BYTE *d = (BYTE*)dst;
+ const BYTE *s = (const BYTE*)src;
+
+#if _WORD_ACCESS == 1
+ while (cnt >= sizeof(int)) {
+ *(int*)d = *(int*)s;
+ d += sizeof(int); s += sizeof(int);
+ cnt -= sizeof(int);
+ }
+#endif
+ while (cnt--)
+ *d++ = *s++;
}
/* Fill memory */
static
-void mem_set (void* dst, int val, int cnt) {
- char *d = (char*)dst;
- while (cnt--) *d++ = (char)val;
+void mem_set (void* dst, int val, UINT cnt) {
+ BYTE *d = (BYTE*)dst;
+
+ while (cnt--)
+ *d++ = (BYTE)val;
}
/* Compare memory to memory */
static
-int mem_cmp (const void* dst, const void* src, int cnt) {
- const char *d = (const char *)dst, *s = (const char *)src;
+int mem_cmp (const void* dst, const void* src, UINT cnt) {
+ const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
int r = 0;
+
while (cnt-- && (r = *d++ - *s++) == 0) ;
return r;
}
#if _FS_REENTRANT
static
-BOOL lock_fs (
+int lock_fs (
FATFS *fs /* File system object */
)
{
/*-----------------------------------------------------------------------*/
+/* File shareing control functions */
+/*-----------------------------------------------------------------------*/
+#if _FS_SHARE
+
+static
+FRESULT chk_lock ( /* Check if the file can be accessed */
+ DIR* dj, /* Directory object pointing the file to be checked */
+ int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
+)
+{
+ UINT i, be;
+
+ /* Search file semaphore table */
+ for (i = be = 0; i < _FS_SHARE; i++) {
+ if (Files[i].fs) { /* Existing entry */
+ if (Files[i].fs == dj->fs && /* Check if the file matched with an open file */
+ Files[i].clu == dj->sclust &&
+ Files[i].idx == dj->index) break;
+ } else { /* Blank entry */
+ be++;
+ }
+ }
+ if (i == _FS_SHARE) /* The file is not opened */
+ return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
+
+ /* The file has been opened. Reject any open against writing file and all write mode open */
+ return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
+}
+
+
+static
+int enq_lock ( /* Check if an entry is available for a new file */
+ FATFS* fs /* File system object */
+)
+{
+ UINT i;
+
+ for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ;
+ return (i == _FS_SHARE) ? 0 : 1;
+}
+
+
+static
+UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */
+ DIR* dj, /* Directory object pointing the file to register or increment */
+ int acc /* Desired access mode (0:Read, !0:Write) */
+)
+{
+ UINT i;
+
+
+ for (i = 0; i < _FS_SHARE; i++) { /* Find the file */
+ if (Files[i].fs == dj->fs &&
+ Files[i].clu == dj->sclust &&
+ Files[i].idx == dj->index) break;
+ }
+
+ if (i == _FS_SHARE) { /* Not opened. Register it as new. */
+ for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ;
+ if (i == _FS_SHARE) return 0; /* No space to register (int err) */
+ Files[i].fs = dj->fs;
+ Files[i].clu = dj->sclust;
+ Files[i].idx = dj->index;
+ Files[i].ctr = 0;
+ }
+
+ if (acc && Files[i].ctr) return 0; /* Access violation (int err) */
+
+ Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
+
+ return i + 1;
+}
+
+
+static
+FRESULT dec_lock ( /* Decrement file open counter */
+ UINT i /* Semaphore index */
+)
+{
+ WORD n;
+ FRESULT res;
+
+
+ if (--i < _FS_SHARE) {
+ n = Files[i].ctr;
+ if (n == 0x100) n = 0;
+ if (n) n--;
+ Files[i].ctr = n;
+ if (!n) Files[i].fs = 0;
+ res = FR_OK;
+ } else {
+ res = FR_INT_ERR;
+ }
+ return res;
+}
+
+
+static
+void clear_lock ( /* Clear lock entries of the volume */
+ FATFS *fs
+)
+{
+ UINT i;
+
+ for (i = 0; i < _FS_SHARE; i++) {
+ if (Files[i].fs == fs) Files[i].fs = 0;
+ }
+}
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
/* Change window offset */
/*-----------------------------------------------------------------------*/
static
FRESULT move_window (
FATFS *fs, /* File system object */
- DWORD sector /* Sector number to make apperance in the fs->win[] */
+ DWORD sector /* Sector number to make appearance in the fs->win[] */
) /* Move to zero only writes back dirty window */
{
DWORD wsect;
if (wsect != sector) { /* Changed current window */
#if !_FS_READONLY
if (fs->wflag) { /* Write back dirty window if needed */
- if (disk_write(fs->drive, fs->win, wsect, 1) != RES_OK)
+ if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK)
return FR_DISK_ERR;
fs->wflag = 0;
- if (wsect < (fs->fatbase + fs->sects_fat)) { /* In FAT area */
+ if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */
BYTE nf;
- for (nf = fs->n_fats; nf > 1; nf--) { /* Refrect the change to all FAT copies */
- wsect += fs->sects_fat;
- disk_write(fs->drive, fs->win, wsect, 1);
+ for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */
+ wsect += fs->fsize;
+ disk_write(fs->drv, fs->win, wsect, 1);
}
}
}
#endif
if (sector) {
- if (disk_read(fs->drive, fs->win, sector, 1) != RES_OK)
+ if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK)
return FR_DISK_ERR;
fs->winsect = sector;
}
/* Update FSInfo sector if needed */
if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
fs->winsect = 0;
+ /* Create FSInfo structure */
mem_set(fs->win, 0, 512);
ST_WORD(fs->win+BS_55AA, 0xAA55);
ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);
ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);
ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);
ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);
- disk_write(fs->drive, fs->win, fs->fsi_sector, 1);
+ /* Write it into the FSInfo sector */
+ disk_write(fs->drv, fs->win, fs->fsi_sector, 1);
fs->fsi_flag = 0;
}
/* Make sure that no pending write process in the physical drive */
- if (disk_ioctl(fs->drive, CTRL_SYNC, (void*)NULL) != RES_OK)
+ if (disk_ioctl(fs->drv, CTRL_SYNC, (void*)0) != RES_OK)
res = FR_DISK_ERR;
}
/*-----------------------------------------------------------------------*/
+/* Get sector# from cluster# */
+/*-----------------------------------------------------------------------*/
+
+
+DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to be converted */
+)
+{
+ clst -= 2;
+ if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
+ return clst * fs->csize + fs->database;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
/* FAT access - Read value of a FAT entry */
/*-----------------------------------------------------------------------*/
-DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Interal error, Else:Cluster status */
+DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */
FATFS *fs, /* File system object */
DWORD clst /* Cluster# to get the link information */
)
{
UINT wc, bc;
- DWORD fsect;
+ BYTE *p;
- if (clst < 2 || clst >= fs->max_clust) /* Range check */
+ if (clst < 2 || clst >= fs->n_fatent) /* Chack range */
return 1;
- fsect = fs->fatbase;
switch (fs->fs_type) {
case FS_FAT12 :
- bc = clst; bc += bc / 2;
- if (move_window(fs, fsect + (bc / SS(fs)))) break;
- wc = fs->win[bc & (SS(fs) - 1)]; bc++;
- if (move_window(fs, fsect + (bc / SS(fs)))) break;
- wc |= (WORD)fs->win[bc & (SS(fs) - 1)] << 8;
+ bc = (UINT)clst; bc += bc / 2;
+ if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
+ wc = fs->win[bc % SS(fs)]; bc++;
+ if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
+ wc |= fs->win[bc % SS(fs)] << 8;
return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
case FS_FAT16 :
- if (move_window(fs, fsect + (clst / (SS(fs) / 2)))) break;
- return LD_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)]);
+ if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break;
+ p = &fs->win[clst * 2 % SS(fs)];
+ return LD_WORD(p);
case FS_FAT32 :
- if (move_window(fs, fsect + (clst / (SS(fs) / 4)))) break;
- return LD_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)]) & 0x0FFFFFFF;
+ if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break;
+ p = &fs->win[clst * 4 % SS(fs)];
+ return LD_DWORD(p) & 0x0FFFFFFF;
}
- return 0xFFFFFFFF; /* An error occured at the disk I/O layer */
+ return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */
}
FRESULT put_fat (
FATFS *fs, /* File system object */
- DWORD clst, /* Cluster# to be changed in range of 2 to fs->max_clust - 1 */
+ DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */
DWORD val /* New value to mark the cluster */
)
{
UINT bc;
BYTE *p;
- DWORD fsect;
FRESULT res;
- if (clst < 2 || clst >= fs->max_clust) { /* Range check */
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
res = FR_INT_ERR;
} else {
- fsect = fs->fatbase;
switch (fs->fs_type) {
case FS_FAT12 :
bc = clst; bc += bc / 2;
- res = move_window(fs, fsect + (bc / SS(fs)));
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
if (res != FR_OK) break;
- p = &fs->win[bc & (SS(fs) - 1)];
+ p = &fs->win[bc % SS(fs)];
*p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
bc++;
fs->wflag = 1;
- res = move_window(fs, fsect + (bc / SS(fs)));
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
if (res != FR_OK) break;
- p = &fs->win[bc & (SS(fs) - 1)];
+ p = &fs->win[bc % SS(fs)];
*p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
break;
case FS_FAT16 :
- res = move_window(fs, fsect + (clst / (SS(fs) / 2)));
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
if (res != FR_OK) break;
- ST_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)], (WORD)val);
+ p = &fs->win[clst * 2 % SS(fs)];
+ ST_WORD(p, (WORD)val);
break;
case FS_FAT32 :
- res = move_window(fs, fsect + (clst / (SS(fs) / 4)));
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
if (res != FR_OK) break;
- ST_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)], val);
+ p = &fs->win[clst * 4 % SS(fs)];
+ val |= LD_DWORD(p) & 0xF0000000;
+ ST_DWORD(p, val);
break;
default :
{
FRESULT res;
DWORD nxt;
+#if _USE_ERASE
+ DWORD scl = clst, ecl = clst, resion[2];
+#endif
-
- if (clst < 2 || clst >= fs->max_clust) { /* Check the range of cluster# */
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
res = FR_INT_ERR;
} else {
res = FR_OK;
- while (clst < fs->max_clust) { /* Not a last link? */
+ while (clst < fs->n_fatent) { /* Not a last link? */
nxt = get_fat(fs, clst); /* Get cluster status */
if (nxt == 0) break; /* Empty cluster? */
if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
fs->free_clust++;
fs->fsi_flag = 1;
}
+#if _USE_ERASE
+ if (ecl + 1 == nxt) { /* Next cluster is contiguous */
+ ecl = nxt;
+ } else { /* End of contiguous clusters */
+ resion[0] = clust2sect(fs, scl); /* Start sector */
+ resion[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
+ disk_ioctl(fs->drv, CTRL_ERASE_SECTOR, resion); /* Erase the block */
+ scl = ecl = nxt;
+ }
+#endif
clst = nxt; /* Next cluster */
}
}
DWORD clst /* Cluster# to stretch. 0 means create a new chain. */
)
{
- DWORD cs, ncl, scl, mcl;
+ DWORD cs, ncl, scl;
+ FRESULT res;
- mcl = fs->max_clust;
- if (clst == 0) { /* Create new chain */
+ if (clst == 0) { /* Create a new chain */
scl = fs->last_clust; /* Get suggested start point */
- if (scl == 0 || scl >= mcl) scl = 1;
+ if (!scl || scl >= fs->n_fatent) scl = 1;
}
- else { /* Stretch existing chain */
+ else { /* Stretch the current chain */
cs = get_fat(fs, clst); /* Check the cluster status */
if (cs < 2) return 1; /* It is an invalid cluster */
- if (cs < mcl) return cs; /* It is already followed by next cluster */
+ if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
scl = clst;
}
ncl = scl; /* Start cluster */
for (;;) {
ncl++; /* Next cluster */
- if (ncl >= mcl) { /* Wrap around */
+ if (ncl >= fs->n_fatent) { /* Wrap around */
ncl = 2;
- if (ncl > scl) return 0; /* No free custer */
+ if (ncl > scl) return 0; /* No free cluster */
}
cs = get_fat(fs, ncl); /* Get the cluster status */
if (cs == 0) break; /* Found a free cluster */
- if (cs == 0xFFFFFFFF || cs == 1)/* An error occured */
+ if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */
return cs;
- if (ncl == scl) return 0; /* No free custer */
+ if (ncl == scl) return 0; /* No free cluster */
}
- if (put_fat(fs, ncl, 0x0FFFFFFF)) /* Mark the new cluster "in use" */
- return 0xFFFFFFFF;
- if (clst != 0) { /* Link it to the previous one if needed */
- if (put_fat(fs, clst, ncl))
- return 0xFFFFFFFF;
+ res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */
+ if (res == FR_OK && clst != 0) {
+ res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */
}
-
- fs->last_clust = ncl; /* Update FSINFO */
- if (fs->free_clust != 0xFFFFFFFF) {
- fs->free_clust--;
- fs->fsi_flag = 1;
+ if (res == FR_OK) {
+ fs->last_clust = ncl; /* Update FSINFO */
+ if (fs->free_clust != 0xFFFFFFFF) {
+ fs->free_clust--;
+ fs->fsi_flag = 1;
+ }
+ } else {
+ ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;
}
- return ncl; /* Return new cluster number */
+ return ncl; /* Return new cluster number or error code */
}
#endif /* !_FS_READONLY */
-
/*-----------------------------------------------------------------------*/
-/* Get sector# from cluster# */
+/* FAT handling - Convert offset into cluster with link map table */
/*-----------------------------------------------------------------------*/
-
-DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
- FATFS *fs, /* File system object */
- DWORD clst /* Cluster# to be converted */
+#if _USE_FASTSEEK
+static
+DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
+ FIL* fp, /* Pointer to the file object */
+ DWORD ofs /* File offset to be converted to cluster# */
)
{
- clst -= 2;
- if (clst >= (fs->max_clust - 2)) return 0; /* Invalid cluster# */
- return clst * fs->csize + fs->database;
-}
+ DWORD cl, ncl, *tbl;
+ tbl = fp->cltbl + 1; /* Top of CLMT */
+ cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */
+ for (;;) {
+ ncl = *tbl++; /* Number of cluters in the fragment */
+ if (!ncl) return 0; /* End of table? (error) */
+ if (cl < ncl) break; /* In this fragment? */
+ cl -= ncl; tbl++; /* Next fragment */
+ }
+ return cl + *tbl; /* Return the cluster number */
+}
+#endif /* _USE_FASTSEEK */
+
/*-----------------------------------------------------------------------*/
-/* Directory handling - Seek directory index */
+/* Directory handling - Set directory index */
/*-----------------------------------------------------------------------*/
static
-FRESULT dir_seek (
+FRESULT dir_sdi (
DIR *dj, /* Pointer to directory object */
WORD idx /* Directory index number */
)
dj->index = idx;
clst = dj->sclust;
- if (clst == 1 || clst >= dj->fs->max_clust) /* Check start cluster range */
+ if (clst == 1 || clst >= dj->fs->n_fatent) /* Check start cluster range */
return FR_INT_ERR;
if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
clst = dj->fs->dirbase;
- if (clst == 0) { /* Static table */
+ if (clst == 0) { /* Static table (root-dir in FAT12/16) */
dj->clust = clst;
if (idx >= dj->fs->n_rootdir) /* Index is out of range */
return FR_INT_ERR;
- dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / 32); /* Sector# */
+ dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
}
- else { /* Dynamic table */
- ic = SS(dj->fs) / 32 * dj->fs->csize; /* Entries per cluster */
+ else { /* Dynamic table (sub-dirs or root-dir in FAT32) */
+ ic = SS(dj->fs) / SZ_DIR * dj->fs->csize; /* Entries per cluster */
while (idx >= ic) { /* Follow cluster chain */
clst = get_fat(dj->fs, clst); /* Get next cluster */
if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
- if (clst < 2 || clst >= dj->fs->max_clust) /* Reached to end of table or int error */
+ if (clst < 2 || clst >= dj->fs->n_fatent) /* Reached to end of table or int error */
return FR_INT_ERR;
idx -= ic;
}
dj->clust = clst;
- dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / 32); /* Sector# */
+ dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
}
- dj->dir = dj->fs->win + (idx % (SS(dj->fs) / 32)) * 32; /* Ptr to the entry in the sector */
+ dj->dir = dj->fs->win + (idx % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; /* Ptr to the entry in the sector */
return FR_OK; /* Seek succeeded */
}
/*-----------------------------------------------------------------------*/
static
-FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not streach */
+FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */
DIR *dj, /* Pointer to directory object */
- BOOL streach /* FALSE: Do not streach table, TRUE: Streach table if needed */
+ int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
)
{
DWORD clst;
if (!i || !dj->sect) /* Report EOT when index has reached 65535 */
return FR_NO_FILE;
- if (!(i % (SS(dj->fs) / 32))) { /* Sector changed? */
+ if (!(i % (SS(dj->fs) / SZ_DIR))) { /* Sector changed? */
dj->sect++; /* Next sector */
if (dj->clust == 0) { /* Static table */
return FR_NO_FILE;
}
else { /* Dynamic table */
- if (((i / (SS(dj->fs) / 32)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
+ if (((i / (SS(dj->fs) / SZ_DIR)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
clst = get_fat(dj->fs, dj->clust); /* Get next cluster */
if (clst <= 1) return FR_INT_ERR;
if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
- if (clst >= dj->fs->max_clust) { /* When it reached end of dynamic table */
+ if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */
#if !_FS_READONLY
BYTE c;
- if (!streach) return FR_NO_FILE; /* When do not streach, report EOT */
- clst = create_chain(dj->fs, dj->clust); /* Streach cluster chain */
+ if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */
+ clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */
if (clst == 0) return FR_DENIED; /* No free cluster */
if (clst == 1) return FR_INT_ERR;
if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
- /* Clean-up streached table */
+ /* Clean-up stretched table */
if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */
mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */
dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */
}
dj->index = i;
- dj->dir = dj->fs->win + (i % (SS(dj->fs) / 32)) * 32;
+ dj->dir = dj->fs->win + (i % (SS(dj->fs) / SZ_DIR)) * SZ_DIR;
return FR_OK;
}
static
-BOOL cmp_lfn ( /* TRUE:Matched, FALSE:Not matched */
+int cmp_lfn ( /* 1:Matched, 0:Not matched */
WCHAR *lfnbuf, /* Pointer to the LFN to be compared */
BYTE *dir /* Pointer to the directory entry containing a part of LFN */
)
{
- int i, s;
+ UINT i, s;
WCHAR wc, uc;
- i = ((dir[LDIR_Ord] & 0xBF) - 1) * 13; /* Get offset in the LFN buffer */
+ i = ((dir[LDIR_Ord] & ~LLE) - 1) * 13; /* Get offset in the LFN buffer */
s = 0; wc = 1;
do {
uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
if (wc) { /* Last char has not been processed */
wc = ff_wtoupper(uc); /* Convert it to upper case */
if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */
- return FALSE; /* Not matched */
+ return 0; /* Not matched */
} else {
- if (uc != 0xFFFF) return FALSE; /* Check filler */
+ if (uc != 0xFFFF) return 0; /* Check filler */
}
} while (++s < 13); /* Repeat until all chars in the entry are checked */
- if ((dir[LDIR_Ord] & 0x40) && wc && lfnbuf[i]) /* Last segment matched but different length */
- return FALSE;
+ if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i]) /* Last segment matched but different length */
+ return 0;
- return TRUE; /* The part of LFN matched */
+ return 1; /* The part of LFN matched */
}
static
-BOOL pick_lfn ( /* TRUE:Succeeded, FALSE:Buffer overflow */
+int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */
BYTE *dir /* Pointer to the directory entry */
)
{
- int i, s;
+ UINT i, s;
WCHAR wc, uc;
s = 0; wc = 1;
do {
- uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
+ uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
if (wc) { /* Last char has not been processed */
- if (i >= _MAX_LFN) return FALSE; /* Buffer overflow? */
- lfnbuf[i++] = wc = uc; /* Store it */
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
+ lfnbuf[i++] = wc = uc; /* Store it */
} else {
- if (uc != 0xFFFF) return FALSE; /* Check filler */
+ if (uc != 0xFFFF) return 0; /* Check filler */
}
} while (++s < 13); /* Read all character in the entry */
- if (dir[LDIR_Ord] & 0x40) { /* Put terminator if it is the last LFN part */
- if (i >= _MAX_LFN) return FALSE; /* Buffer overflow? */
+ if (dir[LDIR_Ord] & LLE) { /* Put terminator if it is the last LFN part */
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
lfnbuf[i] = 0;
}
- return TRUE;
+ return 1;
}
BYTE sum /* SFN sum */
)
{
- int i, s;
+ UINT i, s;
WCHAR wc;
ST_WORD(dir+LfnOfs[s], wc); /* Put it */
if (!wc) wc = 0xFFFF; /* Padding chars following last char */
} while (++s < 13);
- if (wc == 0xFFFF || !lfnbuf[i]) ord |= 0x40; /* Bottom LFN part is the start of LFN sequence */
+ if (wc == 0xFFFF || !lfnbuf[i]) ord |= LLE; /* Bottom LFN part is the start of LFN sequence */
dir[LDIR_Ord] = ord; /* Set the LFN order */
}
/*-----------------------------------------------------------------------*/
#if _USE_LFN
void gen_numname (
- BYTE *dst, /* Pointer to genartated SFN */
+ BYTE *dst, /* Pointer to generated SFN */
const BYTE *src, /* Pointer to source SFN to be modified */
const WCHAR *lfn, /* Pointer to LFN */
- WORD num /* Sequense number */
+ WORD seq /* Sequence number */
)
{
- char ns[8];
- int i, j;
+ BYTE ns[8], c;
+ UINT i, j;
mem_cpy(dst, src, 11);
- if (num > 5) { /* On many collisions, generate a hash number instead of sequencial number */
- do num = (num >> 1) + (num << 15) + (WORD)*lfn++; while (*lfn);
+ if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
+ do seq = (seq >> 1) + (seq << 15) + (WORD)*lfn++; while (*lfn);
}
- /* itoa */
+ /* itoa (hexdecimal) */
i = 7;
do {
- ns[i--] = (num % 10) + '0';
- num /= 10;
- } while (num);
+ c = (seq % 16) + '0';
+ if (c > '9') c += 7;
+ ns[i--] = c;
+ seq /= 16;
+ } while (seq);
ns[i] = '~';
/* Append the number */
)
{
BYTE sum = 0;
- int n = 11;
+ UINT n = 11;
do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
return sum;
BYTE a, ord, sum;
#endif
- res = dir_seek(dj, 0); /* Rewind directory object */
+ res = dir_sdi(dj, 0); /* Rewind directory object */
if (res != FR_OK) return res;
#if _USE_LFN
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
#if _USE_LFN /* LFN configuration */
a = dir[DIR_Attr] & AM_MASK;
- if (c == 0xE5 || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
+ if (c == DDE || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
ord = 0xFF;
} else {
if (a == AM_LFN) { /* An LFN entry is found */
if (dj->lfn) {
- if (c & 0x40) { /* Is it start of LFN sequence? */
+ if (c & LLE) { /* Is it start of LFN sequence? */
sum = dir[LDIR_Chksum];
- c &= 0xBF; ord = c; /* LFN start order */
+ c &= ~LLE; ord = c; /* LFN start order */
dj->lfn_idx = dj->index;
}
/* Check validity of the LFN entry and compare it with given name */
if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
break;
#endif
- res = dir_next(dj, FALSE); /* Next entry */
+ res = dir_next(dj, 0); /* Next entry */
} while (res == FR_OK);
return res;
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
#if _USE_LFN /* LFN configuration */
a = dir[DIR_Attr] & AM_MASK;
- if (c == 0xE5 || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
+ if (c == DDE || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
ord = 0xFF;
} else {
if (a == AM_LFN) { /* An LFN entry is found */
- if (c & 0x40) { /* Is it start of LFN sequence? */
+ if (c & LLE) { /* Is it start of LFN sequence? */
sum = dir[LDIR_Chksum];
- c &= 0xBF; ord = c;
+ c &= ~LLE; ord = c;
dj->lfn_idx = dj->index;
}
/* Check LFN validity and capture it */
}
}
#else /* Non LFN configuration */
- if (c != 0xE5 && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
+ if (c != DDE && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
break;
#endif
- res = dir_next(dj, FALSE); /* Next entry */
+ res = dir_next(dj, 0); /* Next entry */
if (res != FR_OK) break;
}
fn = dj->fn; lfn = dj->lfn;
mem_cpy(sn, fn, 12);
- if (_FS_RPATH && (sn[NS] & NS_DOT)) return FR_INVALID_NAME; /* Cannot create dot entry */
+ if (_FS_RPATH && (sn[NS] & NS_DOT)) /* Cannot create dot entry */
+ return FR_INVALID_NAME;
if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
- fn[NS] = 0; dj->lfn = NULL; /* Find only SFN */
+ fn[NS] = 0; dj->lfn = 0; /* Find only SFN */
for (n = 1; n < 100; n++) {
gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
res = dir_find(dj); /* Check if the name collides with existing SFN */
fn[NS] = sn[NS]; dj->lfn = lfn;
}
- if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve reserve an SFN + LFN entries. */
+ if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */
for (ne = 0; lfn[ne]; ne++) ;
ne = (ne + 25) / 13;
} else { /* Otherwise reserve only an SFN entry. */
}
/* Reserve contiguous entries */
- res = dir_seek(dj, 0);
+ res = dir_sdi(dj, 0);
if (res != FR_OK) return res;
n = is = 0;
do {
res = move_window(dj->fs, dj->sect);
if (res != FR_OK) break;
c = *dj->dir; /* Check the entry status */
- if (c == 0xE5 || c == 0) { /* Is it a blank entry? */
- if (n == 0) is = dj->index; /* First index of the contigulus entry */
- if (++n == ne) break; /* A contiguous entry that requiered count is found */
+ if (c == DDE || c == 0) { /* Is it a blank entry? */
+ if (n == 0) is = dj->index; /* First index of the contiguous entry */
+ if (++n == ne) break; /* A contiguous entry that required count is found */
} else {
n = 0; /* Not a blank entry. Restart to search */
}
- res = dir_next(dj, TRUE); /* Next entry with table streach */
+ res = dir_next(dj, 1); /* Next entry with table stretch */
} while (res == FR_OK);
if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */
- res = dir_seek(dj, is);
+ res = dir_sdi(dj, is);
if (res == FR_OK) {
sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */
ne--;
if (res != FR_OK) break;
fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
dj->fs->wflag = 1;
- res = dir_next(dj, FALSE); /* Next entry */
+ res = dir_next(dj, 0); /* Next entry */
} while (res == FR_OK && --ne);
}
}
#else /* Non LFN configuration */
- res = dir_seek(dj, 0);
+ res = dir_sdi(dj, 0);
if (res == FR_OK) {
do { /* Find a blank entry for the SFN */
res = move_window(dj->fs, dj->sect);
if (res != FR_OK) break;
c = *dj->dir;
- if (c == 0xE5 || c == 0) break; /* Is it a blank entry? */
- res = dir_next(dj, TRUE); /* Next entry with table streach */
+ if (c == DDE || c == 0) break; /* Is it a blank entry? */
+ res = dir_next(dj, 1); /* Next entry with table stretch */
} while (res == FR_OK);
}
#endif
res = move_window(dj->fs, dj->sect);
if (res == FR_OK) {
dir = dj->dir;
- mem_set(dir, 0, 32); /* Clean the entry */
+ mem_set(dir, 0, SZ_DIR); /* Clean the entry */
mem_cpy(dir, dj->fn, 11); /* Put SFN */
+#if _USE_LFN
dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */
+#endif
dj->fs->wflag = 1;
}
}
WORD i;
i = dj->index; /* SFN index */
- res = dir_seek(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
+ res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
if (res == FR_OK) {
do {
res = move_window(dj->fs, dj->sect);
if (res != FR_OK) break;
- *dj->dir = 0xE5; /* Mark the entry "deleted" */
+ *dj->dir = DDE; /* Mark the entry "deleted" */
dj->fs->wflag = 1;
if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
- res = dir_next(dj, FALSE); /* Next entry */
+ res = dir_next(dj, 0); /* Next entry */
} while (res == FR_OK);
if (res == FR_NO_FILE) res = FR_INT_ERR;
}
#else /* Non LFN configuration */
- res = dir_seek(dj, dj->index);
+ res = dir_sdi(dj, dj->index);
if (res == FR_OK) {
res = move_window(dj->fs, dj->sect);
if (res == FR_OK) {
- *dj->dir = 0xE5; /* Mark the entry "deleted" */
+ *dj->dir = DDE; /* Mark the entry "deleted" */
dj->fs->wflag = 1;
}
}
static
FRESULT create_name (
DIR *dj, /* Pointer to the directory object */
- const XCHAR **path /* Pointer to pointer to the segment in the path string */
+ const TCHAR **path /* Pointer to pointer to the segment in the path string */
)
{
#ifdef _EXCVT
- static const BYTE cvt[] = _EXCVT;
+ static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */
#endif
#if _USE_LFN /* LFN configuration */
BYTE b, cf;
WCHAR w, *lfn;
- int i, ni, si, di;
- const XCHAR *p;
+ UINT i, ni, si, di;
+ const TCHAR *p;
/* Create LFN in Unicode */
- si = di = 0;
- p = *path;
+ for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
lfn = dj->lfn;
+ si = di = 0;
for (;;) {
w = p[si++]; /* Get a character */
if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */
return FR_INVALID_NAME;
#if !_LFN_UNICODE
w &= 0xFF;
- if (IsDBCS1(w)) { /* If it is a DBC 1st byte */
- b = p[si++]; /* Get 2nd byte */
- if (!IsDBCS2(b)) /* Reject invalid code for DBC */
- return FR_INVALID_NAME;
- w = (w << 8) + b;
+ if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
+ b = (BYTE)p[si++]; /* Get 2nd byte */
+ if (!IsDBCS2(b))
+ return FR_INVALID_NAME; /* Reject invalid sequence */
+ w = (w << 8) + b; /* Create a DBC */
}
- w = ff_convert(w, 1); /* Convert OEM to Unicode */
+ w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
if (!w) return FR_INVALID_NAME; /* Reject invalid code */
#endif
if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */
return FR_INVALID_NAME;
lfn[di++] = w; /* Store the Unicode char */
}
- *path = &p[si]; /* Rerurn pointer to the next segment */
+ *path = &p[si]; /* Return pointer to the next segment */
cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
#if _FS_RPATH
- if ((di == 1 && lfn[di - 1] == '.') || /* Is this a dot entry? */
- (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) {
+ if ((di == 1 && lfn[di-1] == '.') || /* Is this a dot entry? */
+ (di == 2 && lfn[di-1] == '.' && lfn[di-2] == '.')) {
lfn[di] = 0;
for (i = 0; i < 11; i++)
dj->fn[i] = (i < di) ? '.' : ' ';
}
#endif
while (di) { /* Strip trailing spaces and dots */
- w = lfn[di - 1];
+ w = lfn[di-1];
if (w != ' ' && w != '.') break;
di--;
}
- if (!di) return FR_INVALID_NAME; /* Reject null string */
+ if (!di) return FR_INVALID_NAME; /* Reject nul string */
lfn[di] = 0; /* LFN is created */
b = i = 0; ni = 8;
for (;;) {
w = lfn[si++]; /* Get an LFN char */
- if (!w) break; /* Break on enf of the LFN */
+ if (!w) break; /* Break on end of the LFN */
if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */
cf |= NS_LOSS | NS_LFN; continue;
}
if (w >= 0x80) { /* Non ASCII char */
#ifdef _EXCVT
w = ff_convert(w, 0); /* Unicode -> OEM code */
- if (w) w = cvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
+ if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
#else
w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
#endif
cf |= NS_LFN; /* Force create LFN entry */
}
- if (_DF1S && w >= 0x100) { /* Double byte char */
+ if (_DF1S && w >= 0x100) { /* Double byte char (always false on SBCS cfg) */
if (i >= ni - 1) {
cf |= NS_LOSS | NS_LFN; i = ni; continue;
}
dj->fn[i++] = (BYTE)(w >> 8);
} else { /* Single byte char */
- if (!w || chk_chr("+,;[=]", w)) { /* Replace illegal chars for SFN */
- w = '_'; cf |= NS_LOSS | NS_LFN; /* Lossy conversion */
+ if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */
+ w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
} else {
if (IsUpper(w)) { /* ASCII large capital */
b |= 2;
dj->fn[i++] = (BYTE)w;
}
- if (dj->fn[0] == 0xE5) dj->fn[0] = 0x05; /* If the first char collides with deleted mark, replace it with 0x05 */
+ if (dj->fn[0] == DDE) dj->fn[0] = NDDE; /* If the first char collides with deleted mark, replace it with 0x05 */
if (ni == 8) b <<= 2;
if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
#else /* Non-LFN configuration */
BYTE b, c, d, *sfn;
- int ni, si, i;
+ UINT ni, si, i;
const char *p;
/* Create file name in directory form */
+ for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
sfn = dj->fn;
mem_set(sfn, ' ', 11);
si = i = b = 0; ni = 8;
- p = *path;
#if _FS_RPATH
if (p[si] == '.') { /* Is this a dot entry? */
for (;;) {
- c = p[si++];
+ c = (BYTE)p[si++];
if (c != '.' || si >= 3) break;
sfn[i++] = c;
}
if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
- *path = &p[si]; /* Rerurn pointer to the next segment */
+ *path = &p[si]; /* Return pointer to the next segment */
sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */
return FR_OK;
}
#endif
for (;;) {
- c = p[si++];
+ c = (BYTE)p[si++];
if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */
if (c == '.' || i >= ni) {
if (ni != 8 || c != '.') return FR_INVALID_NAME;
i = 8; ni = 11;
b <<= 2; continue;
}
- if (c >= 0x80) { /* Extended char */
+ if (c >= 0x80) { /* Extended char? */
+ b |= 3; /* Eliminate NT flag */
#ifdef _EXCVT
- c = cvt[c - 0x80]; /* Convert extend char (SBCS) */
+ c = excvt[c-0x80]; /* Upper conversion (SBCS) */
#else
- b |= 3; /* Eliminate NT flag if ext char is exist */
#if !_DF1S /* ASCII only cfg */
return FR_INVALID_NAME;
#endif
#endif
}
- if (IsDBCS1(c)) { /* DBC 1st byte? */
- d = p[si++]; /* Get 2nd byte */
+ if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
+ d = (BYTE)p[si++]; /* Get 2nd byte */
if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
return FR_INVALID_NAME;
sfn[i++] = c;
sfn[i++] = d;
} else { /* Single byte code */
- if (chk_chr(" \"*+,[=]|\x7F", c)) /* Reject illegal chrs for SFN */
+ if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
return FR_INVALID_NAME;
if (IsUpper(c)) { /* ASCII large capital? */
b |= 2;
sfn[i++] = c;
}
}
- *path = &p[si]; /* Rerurn pointer to the next segment */
+ *path = &p[si]; /* Return pointer to the next segment */
c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
- if (!i) return FR_INVALID_NAME; /* Reject null string */
- if (sfn[0] == 0xE5) sfn[0] = 0x05; /* When first char collides with 0xE5, replace it with 0x05 */
+ if (!i) return FR_INVALID_NAME; /* Reject nul string */
+ if (sfn[0] == DDE) sfn[0] = NDDE; /* When first char collides with DDE, replace it with 0x05 */
if (ni == 8) b <<= 2;
- if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Extension has only small capital) */
- if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Filename has only small capital) */
+ if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */
+ if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */
sfn[NS] = c; /* Store NT flag, File name is created */
FILINFO *fno /* Pointer to the file information to be filled */
)
{
- int i;
- BYTE c, nt, *dir;
- char *p;
+ UINT i;
+ BYTE nt, *dir;
+ TCHAR *p, c;
p = fno->fname;
for (i = 0; i < 8; i++) { /* Copy name body */
c = dir[i];
if (c == ' ') break;
- if (c == 0x05) c = 0xE5;
+ if (c == NDDE) c = (TCHAR)DDE;
if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;
+#if _LFN_UNICODE
+ if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i+1]))
+ c = (c << 8) | dir[++i];
+ c = ff_convert(c, 1);
+ if (!c) c = '?';
+#endif
*p++ = c;
}
if (dir[8] != ' ') { /* Copy name extension */
c = dir[i];
if (c == ' ') break;
if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;
+#if _LFN_UNICODE
+ if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i+1]))
+ c = (c << 8) | dir[++i];
+ c = ff_convert(c, 1);
+ if (!c) c = '?';
+#endif
*p++ = c;
}
}
fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
}
- *p = 0;
+ *p = 0; /* Terminate SFN str by a \0 */
#if _USE_LFN
- if (fno->lfname) {
- XCHAR *tp = fno->lfname;
+ if (fno->lfname && fno->lfsize) {
+ TCHAR *tp = fno->lfname;
WCHAR w, *lfn;
i = 0;
#if !_LFN_UNICODE
w = ff_convert(w, 0); /* Unicode -> OEM conversion */
if (!w) { i = 0; break; } /* Could not convert, no LFN */
- if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC */
- tp[i++] = (XCHAR)(w >> 8);
+ if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
+ tp[i++] = (TCHAR)(w >> 8);
#endif
- if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overrun, no LFN */
- tp[i++] = (XCHAR)w;
+ if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overflow, no LFN */
+ tp[i++] = (TCHAR)w;
}
}
- tp[i] = 0; /* Terminator */
+ tp[i] = 0; /* Terminate the LFN str by a \0 */
}
#endif
}
static
FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
DIR *dj, /* Directory object to return last directory and found object */
- const XCHAR *path /* Full-path string to find a file or directory */
+ const TCHAR *path /* Full-path string to find a file or directory */
)
{
FRESULT res;
- BYTE *dir, last;
+ BYTE *dir, ns;
- while (!_USE_LFN && *path == ' ') path++; /* Skip leading spaces */
#if _FS_RPATH
if (*path == '/' || *path == '\\') { /* There is a heading separator */
path++; dj->sclust = 0; /* Strip it and start from the root dir */
- } else { /* No heading saparator */
+ } else { /* No heading separator */
dj->sclust = dj->fs->cdir; /* Start from the current dir */
}
#else
dj->sclust = 0; /* Start from the root dir */
#endif
- if ((UINT)*path < ' ') { /* Null path means the start directory itself */
- res = dir_seek(dj, 0);
- dj->dir = NULL;
+ if ((UINT)*path < ' ') { /* Nul path means the start directory itself */
+ res = dir_sdi(dj, 0);
+ dj->dir = 0;
} else { /* Follow path */
for (;;) {
res = create_name(dj, &path); /* Get a segment */
if (res != FR_OK) break;
res = dir_find(dj); /* Find it */
- last = *(dj->fn+NS) & NS_LAST;
- if (res != FR_OK) { /* Could not find the object */
- if (res == FR_NO_FILE && !last)
- res = FR_NO_PATH;
+ ns = *(dj->fn+NS);
+ if (res != FR_OK) { /* Failed to find the object */
+ if (res != FR_NO_FILE) break; /* Abort if any hard error occured */
+ /* Object not found */
+ if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */
+ dj->sclust = 0; dj->dir = 0; /* It is the root dir */
+ res = FR_OK;
+ if (!(ns & NS_LAST)) continue;
+ } else { /* Could not find the object */
+ if (!(ns & NS_LAST)) res = FR_NO_PATH;
+ }
break;
}
- if (last) break; /* Last segment match. Function completed. */
- dir = dj->dir; /* There is next segment. Follow the sub directory */
- if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
+ if (ns & NS_LAST) break; /* Last segment match. Function completed. */
+ dir = dj->dir; /* There is next segment. Follow the sub directory */
+ if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
res = FR_NO_PATH; break;
}
- dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ dj->sclust = LD_CLUST(dir);
}
}
/*-----------------------------------------------------------------------*/
static
-BYTE check_fs ( /* 0:The FAT boot record, 1:Valid boot record but not an FAT, 2:Not a boot record, 3:Error */
+BYTE check_fs ( /* 0:The FAT BR, 1:Valid BR but not an FAT, 2:Not a BR, 3:Disk error */
FATFS *fs, /* File system object */
DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
)
{
- if (disk_read(fs->drive, fs->win, sect, 1) != RES_OK) /* Load boot record */
+ if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */
return 3;
if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */
return 2;
/*-----------------------------------------------------------------------*/
-/* Make sure that the file system is valid */
+/* Check if the file system object is valid or not */
/*-----------------------------------------------------------------------*/
-
-FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occured */
- const XCHAR **path, /* Pointer to pointer to the path name (drive number) */
+static
+FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */
+ const TCHAR **path, /* Pointer to pointer to the path name (drive number) */
FATFS **rfs, /* Pointer to pointer to the found file system object */
BYTE chk_wp /* !=0: Check media write protection for write access */
)
{
- BYTE fmt, *tbl;
+ BYTE fmt, b, *tbl;
UINT vol;
DSTATUS stat;
- DWORD bsect, fsize, tsect, mclst;
- const XCHAR *p = *path;
+ DWORD bsect, fasize, tsect, sysect, nclst, szbfat;
+ WORD nrsv;
+ const TCHAR *p = *path;
FATFS *fs;
/* Get logical drive number from the path name */
- vol = p[0] - '0'; /* Is there a drive number? */
- if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
- p += 2; *path = p; /* Return pointer to the path name */
- } else { /* No drive number is given */
+ vol = p[0] - '0'; /* Is there a drive number? */
+ if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
+ p += 2; *path = p; /* Return pointer to the path name */
+ } else { /* No drive number is given */
#if _FS_RPATH
- vol = Drive; /* Use current drive */
+ vol = CurrVol; /* Use current drive */
#else
- vol = 0; /* Use drive 0 */
+ vol = 0; /* Use drive 0 */
#endif
}
/* Check if the logical drive is valid or not */
- if (vol >= _DRIVES) /* Is the drive number valid? */
+ if (vol >= _VOLUMES) /* Is the drive number valid? */
return FR_INVALID_DRIVE;
- *rfs = fs = FatFs[vol]; /* Returen pointer to the corresponding file system object */
- if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
+ *rfs = fs = FatFs[vol]; /* Return pointer to the corresponding file system object */
+ if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
- ENTER_FF(fs); /* Lock file system */
+ ENTER_FF(fs); /* Lock file system */
- if (fs->fs_type) { /* If the logical drive has been mounted */
- stat = disk_status(fs->drive);
- if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
+ if (fs->fs_type) { /* If the logical drive has been mounted */
+ stat = disk_status(fs->drv);
+ if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
#if !_FS_READONLY
if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */
return FR_WRITE_PROTECTED;
#endif
- return FR_OK; /* The file system object is valid */
+ return FR_OK; /* The file system object is valid */
}
}
- /* The logical drive must be mounted. Following code attempts to mount the volume */
+ /* The logical drive must be mounted. */
+ /* Following code attempts to mount a volume. (analyze BPB and initialize the fs object) */
fs->fs_type = 0; /* Clear the file system object */
- fs->drive = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
- stat = disk_initialize(fs->drive); /* Initialize low level disk I/O layer */
- if (stat & STA_NOINIT) /* Check if the drive is ready */
- return FR_NOT_READY;
-#if _MAX_SS != 512 /* Get disk sector size if needed */
- if (disk_ioctl(fs->drive, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
- return FR_NO_FILESYSTEM;
+ fs->drv = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
+ stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */
+ if (stat & STA_NOINIT) /* Check if the initialization succeeded */
+ return FR_NOT_READY; /* Failed to initialize due to no media or hard error */
+#if _MAX_SS != 512 /* Get disk sector size (variable sector size cfg only) */
+ if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &fs->ssize) != RES_OK)
+ return FR_DISK_ERR;
#endif
#if !_FS_READONLY
if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */
return FR_WRITE_PROTECTED;
#endif
- /* Search FAT partition on the drive */
- fmt = check_fs(fs, bsect = 0); /* Check sector 0 as an SFD format */
- if (fmt == 1) { /* Not an FAT boot record, it may be patitioned */
- /* Check a partition listed in top of the partition table */
- tbl = &fs->win[MBR_Table + LD2PT(vol) * 16]; /* Partition table */
+ /* Search FAT partition on the drive. Supports only generic partitionings, FDISK and SFD. */
+ fmt = check_fs(fs, bsect = 0); /* Check sector 0 if it is a VBR */
+ if (fmt == 1) { /* Not an FAT-VBR, the disk may be partitioned */
+ /* Check the partition listed in top of the partition table */
+ tbl = &fs->win[MBR_Table + LD2PT(vol) * SZ_PTE];/* Partition table */
if (tbl[4]) { /* Is the partition existing? */
bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
fmt = check_fs(fs, bsect); /* Check the partition */
}
}
if (fmt == 3) return FR_DISK_ERR;
- if (fmt || LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* No valid FAT patition is found */
+ if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
+
+ /* Following code initializes the file system object */
+
+ if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
return FR_NO_FILESYSTEM;
- /* Initialize the file system object */
- fsize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
- if (!fsize) fsize = LD_DWORD(fs->win+BPB_FATSz32);
- fs->sects_fat = fsize;
- fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FAT copies */
- fsize *= fs->n_fats; /* (Number of sectors in FAT area) */
- fs->fatbase = bsect + LD_WORD(fs->win+BPB_RsvdSecCnt); /* FAT start sector (lba) */
- fs->csize = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
- fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Nmuber of root directory entries */
+ fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
+ if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32);
+ fs->fsize = fasize;
+
+ fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */
+ if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */
+ fasize *= b; /* Number of sectors for FAT area */
+
+ fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
+ if (!b || (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */
+
+ fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */
+ if (fs->n_rootdir % (SS(fs) / SZ_DIR)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
+
tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
- fs->max_clust = mclst = (tsect /* Last cluster# + 1 (Number of clusters + 2) */
- - LD_WORD(fs->win+BPB_RsvdSecCnt) - fsize - fs->n_rootdir / (SS(fs)/32)
- ) / fs->csize + 2;
- fmt = FS_FAT12; /* Determine the FAT sub type */
- if (mclst >= 0xFF7) fmt = FS_FAT16; /* Number of clusters >= 0xFF5 */
- if (mclst >= 0xFFF7) fmt = FS_FAT32; /* Number of clusters >= 0xFFF5 */
+ nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */
+ if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */
- if (fmt == FS_FAT32)
+ /* Determine the FAT sub type */
+ sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIR); /* RSV+FAT+DIR */
+ if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
+ nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
+ if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
+ fmt = FS_FAT12;
+ if (nclst >= MIN_FAT16) fmt = FS_FAT16;
+ if (nclst >= MIN_FAT32) fmt = FS_FAT32;
+
+ /* Boundaries and Limits */
+ fs->n_fatent = nclst + 2; /* Number of FAT entries */
+ fs->database = bsect + sysect; /* Data start sector */
+ fs->fatbase = bsect + nrsv; /* FAT start sector */
+ if (fmt == FS_FAT32) {
+ if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */
- else
- fs->dirbase = fs->fatbase + fsize; /* Root directory start sector (lba) */
- fs->database = fs->fatbase + fsize + fs->n_rootdir / (SS(fs)/32); /* Data start sector (lba) */
+ szbfat = fs->n_fatent * 4; /* (Required FAT size) */
+ } else {
+ if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
+ fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
+ szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */
+ fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
+ }
+ if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than required) */
+ return FR_NO_FILESYSTEM;
#if !_FS_READONLY
- /* Initialize allocation information */
+ /* Initialize cluster allocation information */
fs->free_clust = 0xFFFFFFFF;
- fs->wflag = 0;
- /* Get fsinfo if needed */
+ fs->last_clust = 0;
+
+ /* Get fsinfo if available */
if (fmt == FS_FAT32) {
fs->fsi_flag = 0;
fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);
- if (disk_read(fs->drive, fs->win, fs->fsi_sector, 1) == RES_OK &&
+ if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK &&
LD_WORD(fs->win+BS_55AA) == 0xAA55 &&
LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&
LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {
- fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);
- fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);
+ fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);
+ fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);
}
}
#endif
fs->fs_type = fmt; /* FAT sub-type */
+ fs->id = ++Fsid; /* File system mount ID */
fs->winsect = 0; /* Invalidate sector cache */
+ fs->wflag = 0;
#if _FS_RPATH
fs->cdir = 0; /* Current directory (root dir) */
#endif
- fs->id = ++Fsid; /* File system mount ID */
+#if _FS_SHARE /* Clear file lock semaphores */
+ clear_lock(fs);
+#endif
return FR_OK;
}
ENTER_FF(fs); /* Lock file system */
- if (disk_status(fs->drive) & STA_NOINIT)
+ if (disk_status(fs->drv) & STA_NOINIT)
return FR_NOT_READY;
return FR_OK;
/*-----------------------------------------------------------------------*/
-/* Mount/Unmount a Locical Drive */
+/* Mount/Unmount a Logical Drive */
/*-----------------------------------------------------------------------*/
FRESULT f_mount (
FATFS *rfs;
- if (vol >= _DRIVES) /* Check if the drive number is valid */
+ if (vol >= _VOLUMES) /* Check if the drive number is valid */
return FR_INVALID_DRIVE;
rfs = FatFs[vol]; /* Get current fs object */
if (rfs) {
+#if _FS_SHARE
+ clear_lock(rfs);
+#endif
#if _FS_REENTRANT /* Discard sync object of the current volume */
if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;
#endif
FRESULT f_open (
FIL *fp, /* Pointer to the blank file object */
- const XCHAR *path, /* Pointer to the file name */
+ const TCHAR *path, /* Pointer to the file name */
BYTE mode /* Access mode and file open mode flags */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
+ DEF_NAMEBUF;
+
+ fp->fs = 0; /* Clear file object */
- fp->fs = NULL; /* Clear file object */
#if !_FS_READONLY
- mode &= (FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW);
- res = chk_mounted(&path, &dj.fs, (BYTE)(mode & (FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)));
+ mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW;
+ res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ));
#else
mode &= FA_READ;
res = chk_mounted(&path, &dj.fs, 0);
#endif
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
- INITBUF(dj, sfn, lfn);
- res = follow_path(&dj, path); /* Follow the file path */
+ INIT_BUF(dj);
+ if (res == FR_OK)
+ res = follow_path(&dj, path); /* Follow the file path */
+ dir = dj.dir;
-#if !_FS_READONLY
+#if !_FS_READONLY /* R/W configuration */
+ if (res == FR_OK) {
+ if (!dir) /* Current dir itself */
+ res = FR_INVALID_NAME;
+#if _FS_SHARE
+ else
+ res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+#endif
+ }
/* Create or Open a file */
if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
- DWORD ps, cl;
+ DWORD dw, cl;
- if (res != FR_OK) { /* No file, create new */
- if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
+ if (res != FR_OK) { /* No file, create new */
+ if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
+#if _FS_SHARE
+ res = enq_lock(dj.fs) ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
+#else
res = dir_register(&dj);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
- mode |= FA_CREATE_ALWAYS;
- dir = dj.dir; /* Created entry (SFN entry) */
+#endif
+ mode |= FA_CREATE_ALWAYS; /* File is created */
+ dir = dj.dir; /* New entry */
}
- else { /* Any object is already existing */
- if (mode & FA_CREATE_NEW) /* Cannot create new */
- LEAVE_FF(dj.fs, FR_EXIST);
- dir = dj.dir;
- if (!dir || (dir[DIR_Attr] & (AM_RDO | AM_DIR))) /* Cannot overwrite it (R/O or DIR) */
- LEAVE_FF(dj.fs, FR_DENIED);
- if (mode & FA_CREATE_ALWAYS) { /* Resize it to zero on over write mode */
- cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); /* Get start cluster */
- ST_WORD(dir+DIR_FstClusHI, 0); /* cluster = 0 */
- ST_WORD(dir+DIR_FstClusLO, 0);
- ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
- dj.fs->wflag = 1;
- ps = dj.fs->winsect; /* Remove the cluster chain */
- if (cl) {
- res = remove_chain(dj.fs, cl);
- if (res) LEAVE_FF(dj.fs, res);
- dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
- }
- res = move_window(dj.fs, ps);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
+ else { /* Any object is already existing */
+ if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */
+ res = FR_DENIED;
+ } else {
+ if (mode & FA_CREATE_NEW) /* Cannot create as new file */
+ res = FR_EXIST;
}
}
- if (mode & FA_CREATE_ALWAYS) {
+ if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
+ dw = get_fattime(); /* Created time */
+ ST_DWORD(dir+DIR_CrtTime, dw);
dir[DIR_Attr] = 0; /* Reset attribute */
- ps = get_fattime();
- ST_DWORD(dir+DIR_CrtTime, ps); /* Created time */
+ ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
+ cl = LD_CLUST(dir); /* Get start cluster */
+ ST_CLUST(dir, 0); /* cluster = 0 */
dj.fs->wflag = 1;
- mode |= FA__WRITTEN; /* Set file changed flag */
+ if (cl) { /* Remove the cluster chain if exist */
+ dw = dj.fs->winsect;
+ res = remove_chain(dj.fs, cl);
+ if (res == FR_OK) {
+ dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
+ res = move_window(dj.fs, dw);
+ }
+ }
}
}
- /* Open an existing file */
- else {
-#endif /* !_FS_READONLY */
- if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */
- dir = dj.dir;
- if (!dir || (dir[DIR_Attr] & AM_DIR)) /* It is a directory */
- LEAVE_FF(dj.fs, FR_NO_FILE);
-#if !_FS_READONLY
- if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
- LEAVE_FF(dj.fs, FR_DENIED);
+ else { /* Open an existing file */
+ if (res == FR_OK) { /* Follow succeeded */
+ if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
+ res = FR_NO_FILE;
+ } else {
+ if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
+ res = FR_DENIED;
+ }
+ }
}
- fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
- fp->dir_ptr = dj.dir;
+ if (res == FR_OK) {
+ if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */
+ mode |= FA__WRITTEN;
+ fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
+ fp->dir_ptr = dir;
+#if _FS_SHARE
+ fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+ if (!fp->lockid) res = FR_INT_ERR;
#endif
- fp->flag = mode; /* File access mode */
- fp->org_clust = /* File start cluster */
- ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
- fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
- fp->fptr = 0; fp->csect = 255; /* File pointer */
- fp->dsect = 0;
- fp->fs = dj.fs; fp->id = dj.fs->id; /* Owner file system object of the file */
+ }
- LEAVE_FF(dj.fs, FR_OK);
+#else /* R/O configuration */
+ if (res == FR_OK) { /* Follow succeeded */
+ if (!dir) { /* Current dir itself */
+ res = FR_INVALID_NAME;
+ } else {
+ if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
+ res = FR_NO_FILE;
+ }
+ }
+#endif
+ FREE_BUF();
+
+ if (res == FR_OK) {
+ fp->flag = mode; /* File access mode */
+ fp->sclust = LD_CLUST(dir); /* File start cluster */
+ fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
+ fp->fptr = 0; /* File pointer */
+ fp->dsect = 0;
+#if _USE_FASTSEEK
+ fp->cltbl = 0; /* Normal seek mode */
+#endif
+ fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */
+ }
+
+ LEAVE_FF(dj.fs, res);
}
FRESULT res;
DWORD clst, sect, remain;
UINT rcnt, cc;
- BYTE *rbuff = buff;
+ BYTE csect, *rbuff = buff;
- *br = 0; /* Initialize bytes read */
+ *br = 0; /* Initialize byte counter */
- res = validate(fp->fs, fp->id); /* Check validity of the object */
+ res = validate(fp->fs, fp->id); /* Check validity */
if (res != FR_OK) LEAVE_FF(fp->fs, res);
- if (fp->flag & FA__ERROR) /* Check abort flag */
+ if (fp->flag & FA__ERROR) /* Aborted file? */
LEAVE_FF(fp->fs, FR_INT_ERR);
- if (!(fp->flag & FA_READ)) /* Check access mode */
+ if (!(fp->flag & FA_READ)) /* Check access mode */
LEAVE_FF(fp->fs, FR_DENIED);
remain = fp->fsize - fp->fptr;
- if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
+ if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
- for ( ; btr; /* Repeat until all data transferred */
+ for ( ; btr; /* Repeat until all data read */
rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
- if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
- if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
- clst = (fp->fptr == 0) ? /* On the top of the file? */
- fp->org_clust : get_fat(fp->fs, fp->curr_clust);
- if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
+ if (fp->fptr == 0) { /* On the top of the file? */
+ clst = fp->sclust; /* Follow from the origin */
+ } else { /* Middle or end of the file */
+#if _USE_FASTSEEK
+ if (fp->cltbl)
+ clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
+ else
+#endif
+ clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */
+ }
+ if (clst < 2) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->curr_clust = clst; /* Update current cluster */
- fp->csect = 0; /* Reset sector offset in the cluster */
+ fp->clust = clst; /* Update current cluster */
}
- sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
+ sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
if (!sect) ABORT(fp->fs, FR_INT_ERR);
- sect += fp->csect;
- cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
- if (cc) { /* Read maximum contiguous sectors directly */
- if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */
- cc = fp->fs->csize - fp->csect;
- if (disk_read(fp->fs->drive, rbuff, sect, (BYTE)cc) != RES_OK)
+ sect += csect;
+ cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
+ if (cc) { /* Read maximum contiguous sectors directly */
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = fp->fs->csize - csect;
+ if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
-#if !_FS_READONLY && _FS_MINIMIZE <= 2
+#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
#if _FS_TINY
- if (fp->fs->wflag && fp->fs->winsect - sect < cc) /* Replace one of the read sectors with cached data if it contains a dirty sector */
+ if (fp->fs->wflag && fp->fs->winsect - sect < cc)
mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
#else
- if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc) /* Replace one of the read sectors with cached data if it contains a dirty sector */
+ if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
#endif
#endif
- fp->csect += (BYTE)cc; /* Next sector address in the cluster */
- rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
+ rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
continue;
}
#if !_FS_TINY
+ if (fp->dsect != sect) { /* Load data sector if not in cache */
#if !_FS_READONLY
- if (fp->flag & FA__DIRTY) { /* Write sector I/O buffer if needed */
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
- fp->flag &= ~FA__DIRTY;
- }
+ if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
#endif
- if (fp->dsect != sect) { /* Fill sector buffer with file data */
- if (disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)
+ if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */
ABORT(fp->fs, FR_DISK_ERR);
}
#endif
fp->dsect = sect;
- fp->csect++; /* Next sector address in the cluster */
}
rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
if (rcnt > btr) rcnt = btr;
#if _FS_TINY
- if (move_window(fp->fs, fp->dsect)) /* Move sector window */
+ if (move_window(fp->fs, fp->dsect)) /* Move sector window */
ABORT(fp->fs, FR_DISK_ERR);
mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
#else
DWORD clst, sect;
UINT wcnt, cc;
const BYTE *wbuff = buff;
+ BYTE csect;
- *bw = 0; /* Initialize bytes written */
+ *bw = 0; /* Initialize byte counter */
- res = validate(fp->fs, fp->id); /* Check validity of the object */
+ res = validate(fp->fs, fp->id); /* Check validity */
if (res != FR_OK) LEAVE_FF(fp->fs, res);
- if (fp->flag & FA__ERROR) /* Check abort flag */
+ if (fp->flag & FA__ERROR) /* Aborted file? */
LEAVE_FF(fp->fs, FR_INT_ERR);
- if (!(fp->flag & FA_WRITE)) /* Check access mode */
+ if (!(fp->flag & FA_WRITE)) /* Check access mode */
LEAVE_FF(fp->fs, FR_DENIED);
- if (fp->fsize + btw < fp->fsize) btw = 0; /* File size cannot reach 4GB */
+ if ((DWORD)(fp->fsize + btw) < fp->fsize) btw = 0; /* File size cannot reach 4GB */
- for ( ; btw; /* Repeat until all data transferred */
+ for ( ; btw; /* Repeat until all data written */
wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
- if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
- if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
- if (fp->fptr == 0) { /* On the top of the file? */
- clst = fp->org_clust; /* Follow from the origin */
- if (clst == 0) /* When there is no cluster chain, */
- fp->org_clust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
- } else { /* Middle or end of the file */
- clst = create_chain(fp->fs, fp->curr_clust); /* Follow or streach cluster chain */
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
+ if (fp->fptr == 0) { /* On the top of the file? */
+ clst = fp->sclust; /* Follow from the origin */
+ if (clst == 0) /* When no cluster is allocated, */
+ fp->sclust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
+ } else { /* Middle or end of the file */
+#if _USE_FASTSEEK
+ if (fp->cltbl)
+ clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
+ else
+#endif
+ clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */
}
- if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
+ if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->curr_clust = clst; /* Update current cluster */
- fp->csect = 0; /* Reset sector address in the cluster */
+ fp->clust = clst; /* Update current cluster */
}
#if _FS_TINY
- if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write back data buffer prior to following direct transfer */
+ if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write-back sector cache */
ABORT(fp->fs, FR_DISK_ERR);
#else
- if (fp->flag & FA__DIRTY) { /* Write back data buffer prior to following direct transfer */
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
+ if (fp->flag & FA__DIRTY) { /* Write-back sector cache */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
fp->flag &= ~FA__DIRTY;
}
#endif
- sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
+ sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
if (!sect) ABORT(fp->fs, FR_INT_ERR);
- sect += fp->csect;
- cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
- if (cc) { /* Write maximum contiguous sectors directly */
- if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */
- cc = fp->fs->csize - fp->csect;
- if (disk_write(fp->fs->drive, wbuff, sect, (BYTE)cc) != RES_OK)
+ sect += csect;
+ cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
+ if (cc) { /* Write maximum contiguous sectors directly */
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = fp->fs->csize - csect;
+ if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
#if _FS_TINY
- if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
+ if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
fp->fs->wflag = 0;
}
#else
- if (fp->dsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
+ if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
fp->flag &= ~FA__DIRTY;
}
#endif
- fp->csect += (BYTE)cc; /* Next sector address in the cluster */
- wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
+ wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
continue;
}
#if _FS_TINY
- if (fp->fptr >= fp->fsize) { /* Avoid silly buffer filling at growing edge */
+ if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */
if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);
fp->fs->winsect = sect;
}
#else
- if (fp->dsect != sect) { /* Fill sector buffer with file data */
+ if (fp->dsect != sect) { /* Fill sector cache with file data */
if (fp->fptr < fp->fsize &&
- disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)
+ disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
}
#endif
fp->dsect = sect;
- fp->csect++; /* Next sector address in the cluster */
}
- wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Put partial sector into file I/O buffer */
+ wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */
if (wcnt > btw) wcnt = btw;
#if _FS_TINY
- if (move_window(fp->fs, fp->dsect)) /* Move sector window */
+ if (move_window(fp->fs, fp->dsect)) /* Move sector window */
ABORT(fp->fs, FR_DISK_ERR);
mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
fp->fs->wflag = 1;
}
if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
- fp->flag |= FA__WRITTEN; /* Set file changed flag */
+ fp->flag |= FA__WRITTEN; /* Set file change flag */
LEAVE_FF(fp->fs, FR_OK);
}
if (fp->flag & FA__WRITTEN) { /* Has the file been written? */
#if !_FS_TINY /* Write-back dirty buffer */
if (fp->flag & FA__DIRTY) {
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
LEAVE_FF(fp->fs, FR_DISK_ERR);
fp->flag &= ~FA__DIRTY;
}
dir = fp->dir_ptr;
dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
- ST_WORD(dir+DIR_FstClusLO, fp->org_clust); /* Update start cluster */
- ST_WORD(dir+DIR_FstClusHI, fp->org_clust >> 16);
- tim = get_fattime(); /* Updated time */
+ ST_CLUST(dir, fp->sclust); /* Update start cluster */
+ tim = get_fattime(); /* Update updated time */
ST_DWORD(dir+DIR_WrtTime, tim);
fp->flag &= ~FA__WRITTEN;
fp->fs->wflag = 1;
{
FRESULT res;
-
#if _FS_READONLY
- res = validate(fp->fs, fp->id);
- if (res == FR_OK) fp->fs = NULL;
- LEAVE_FF(fp->fs, res);
+ FATFS *fs = fp->fs;
+ res = validate(fs, fp->id);
+ if (res == FR_OK) fp->fs = 0; /* Discard file object */
+ LEAVE_FF(fs, res);
+
#else
- res = f_sync(fp);
- if (res == FR_OK) fp->fs = NULL;
+ res = f_sync(fp); /* Flush cached data */
+#if _FS_SHARE
+ if (res == FR_OK) { /* Decrement open counter */
+#if _FS_REENTRANT
+ res = validate(fp->fs, fp->id);
+ if (res == FR_OK) {
+ res = dec_lock(fp->lockid);
+ unlock_fs(fp->fs, FR_OK);
+ }
+#else
+ res = dec_lock(fp->lockid);
+#endif
+ }
+#endif
+ if (res == FR_OK) fp->fs = 0; /* Discard file object */
return res;
#endif
}
/*-----------------------------------------------------------------------*/
-/* Change Current Drive/Directory */
+/* Current Drive/Directory Handlings */
/*-----------------------------------------------------------------------*/
-#if _FS_RPATH
+#if _FS_RPATH >= 1
FRESULT f_chdrive (
BYTE drv /* Drive number */
)
{
- if (drv >= _DRIVES) return FR_INVALID_DRIVE;
+ if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
- Drive = drv;
+ CurrVol = drv;
return FR_OK;
}
-
FRESULT f_chdir (
- const XCHAR *path /* Pointer to the directory path */
+ const TCHAR *path /* Pointer to the directory path */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
- BYTE *dir;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 0);
if (res == FR_OK) {
- INITBUF(dj, sfn, lfn);
- res = follow_path(&dj, path); /* Follow the file path */
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the path */
+ FREE_BUF();
if (res == FR_OK) { /* Follow completed */
- dir = dj.dir; /* Pointer to the entry */
- if (!dir) {
- dj.fs->cdir = 0; /* No entry (root dir) */
+ if (!dj.dir) {
+ dj.fs->cdir = dj.sclust; /* Start directory itself */
} else {
- if (dir[DIR_Attr] & AM_DIR) /* Reached to the dir */
- dj.fs->cdir = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
+ dj.fs->cdir = LD_CLUST(dj.dir);
else
- res = FR_NO_PATH; /* Could not reach the dir (it is a file) */
+ res = FR_NO_PATH; /* Reached but a file */
}
}
if (res == FR_NO_FILE) res = FR_NO_PATH;
LEAVE_FF(dj.fs, res);
}
-#endif
+
+#if _FS_RPATH >= 2
+FRESULT f_getcwd (
+ TCHAR *path, /* Pointer to the directory path */
+ UINT sz_path /* Size of path */
+)
+{
+ FRESULT res;
+ DIR dj;
+ UINT i, n;
+ DWORD ccl;
+ TCHAR *tp;
+ FILINFO fno;
+ DEF_NAMEBUF;
+
+
+ *path = 0;
+ res = chk_mounted((const TCHAR**)&path, &dj.fs, 0); /* Get current volume */
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ i = sz_path; /* Bottom of buffer (dir stack base) */
+ dj.sclust = dj.fs->cdir; /* Start to follow upper dir from current dir */
+ while ((ccl = dj.sclust) != 0) { /* Repeat while current dir is a sub-dir */
+ res = dir_sdi(&dj, 1); /* Get parent dir */
+ if (res != FR_OK) break;
+ res = dir_read(&dj);
+ if (res != FR_OK) break;
+ dj.sclust = LD_CLUST(dj.dir); /* Goto parent dir */
+ res = dir_sdi(&dj, 0);
+ if (res != FR_OK) break;
+ do { /* Find the entry links to the child dir */
+ res = dir_read(&dj);
+ if (res != FR_OK) break;
+ if (ccl == LD_CLUST(dj.dir)) break; /* Found the entry */
+ res = dir_next(&dj, 0);
+ } while (res == FR_OK);
+ if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
+ if (res != FR_OK) break;
+#if _USE_LFN
+ fno.lfname = path;
+ fno.lfsize = i;
+#endif
+ get_fileinfo(&dj, &fno); /* Get the dir name and push it to the buffer */
+ tp = fno.fname;
+ if (_USE_LFN && *path) tp = path;
+ for (n = 0; tp[n]; n++) ;
+ if (i < n + 3) {
+ res = FR_NOT_ENOUGH_CORE; break;
+ }
+ while (n) path[--i] = tp[--n];
+ path[--i] = '/';
+ }
+ tp = path;
+ if (res == FR_OK) {
+ *tp++ = '0' + CurrVol; /* Put drive number */
+ *tp++ = ':';
+ if (i == sz_path) { /* Root-dir */
+ *tp++ = '/';
+ } else { /* Sub-dir */
+ do /* Add stacked path str */
+ *tp++ = path[i++];
+ while (i < sz_path);
+ }
+ }
+ *tp = 0;
+ FREE_BUF();
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+#endif /* _FS_RPATH >= 2 */
+#endif /* _FS_RPATH >= 1 */
)
{
FRESULT res;
- DWORD clst, bcs, nsect, ifptr;
res = validate(fp->fs, fp->id); /* Check validity of the object */
if (res != FR_OK) LEAVE_FF(fp->fs, res);
if (fp->flag & FA__ERROR) /* Check abort flag */
LEAVE_FF(fp->fs, FR_INT_ERR);
- if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
-#if !_FS_READONLY
- && !(fp->flag & FA_WRITE)
-#endif
- ) ofs = fp->fsize;
-
- ifptr = fp->fptr;
- fp->fptr = nsect = 0; fp->csect = 255;
- if (ofs > 0) {
- bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
- if (ifptr > 0 &&
- (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
- fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
- ofs -= fp->fptr;
- clst = fp->curr_clust;
- } else { /* When seek to back cluster, */
- clst = fp->org_clust; /* start from the first cluster */
-#if !_FS_READONLY
- if (clst == 0) { /* If no cluster chain, create a new chain */
- clst = create_chain(fp->fs, 0);
- if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->org_clust = clst;
+
+#if _USE_FASTSEEK
+ if (fp->cltbl) { /* Fast seek */
+ DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
+
+ if (ofs == CREATE_LINKMAP) { /* Create CLMT */
+ tbl = fp->cltbl;
+ tlen = *tbl++; ulen = 2; /* Given table size and required table size */
+ cl = fp->sclust; /* Top of the chain */
+ if (cl) {
+ do {
+ /* Get a fragment */
+ tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
+ do {
+ pcl = cl; ncl++;
+ cl = get_fat(fp->fs, cl);
+ if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ } while (cl == pcl + 1);
+ if (ulen <= tlen) { /* Store the length and top of the fragment */
+ *tbl++ = ncl; *tbl++ = tcl;
+ }
+ } while (cl < fp->fs->n_fatent); /* Repeat until end of chain */
}
+ *fp->cltbl = ulen; /* Number of items used */
+ if (ulen <= tlen)
+ *tbl = 0; /* Terminate table */
+ else
+ res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
+
+ } else { /* Fast seek */
+ if (ofs > fp->fsize) /* Clip offset at the file size */
+ ofs = fp->fsize;
+ fp->fptr = ofs; /* Set file pointer */
+ if (ofs) {
+ fp->clust = clmt_clust(fp, ofs - 1);
+ dsc = clust2sect(fp->fs, fp->clust);
+ if (!dsc) ABORT(fp->fs, FR_INT_ERR);
+ dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);
+ if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */
+#if !_FS_TINY
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */
+ ABORT(fp->fs, FR_DISK_ERR);
#endif
- fp->curr_clust = clst;
+ fp->dsect = dsc;
+ }
+ }
}
- if (clst != 0) {
- while (ofs > bcs) { /* Cluster following loop */
+ } else
+#endif
+
+ /* Normal Seek */
+ {
+ DWORD clst, bcs, nsect, ifptr;
+
+ if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
#if !_FS_READONLY
- if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
- clst = create_chain(fp->fs, clst); /* Force streached if in write mode */
- if (clst == 0) { /* When disk gets full, clip file size */
- ofs = bcs; break;
- }
- } else
+ && !(fp->flag & FA_WRITE)
+#endif
+ ) ofs = fp->fsize;
+
+ ifptr = fp->fptr;
+ fp->fptr = nsect = 0;
+ if (ofs) {
+ bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
+ if (ifptr > 0 &&
+ (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
+ fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
+ ofs -= fp->fptr;
+ clst = fp->clust;
+ } else { /* When seek to back cluster, */
+ clst = fp->sclust; /* start from the first cluster */
+#if !_FS_READONLY
+ if (clst == 0) { /* If no cluster chain, create a new chain */
+ clst = create_chain(fp->fs, 0);
+ if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->sclust = clst;
+ }
#endif
- clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- if (clst <= 1 || clst >= fp->fs->max_clust) ABORT(fp->fs, FR_INT_ERR);
- fp->curr_clust = clst;
- fp->fptr += bcs;
- ofs -= bcs;
+ fp->clust = clst;
}
- fp->fptr += ofs;
- fp->csect = (BYTE)(ofs / SS(fp->fs)); /* Sector offset in the cluster */
- if (ofs % SS(fp->fs)) {
- nsect = clust2sect(fp->fs, clst); /* Current sector */
- if (!nsect) ABORT(fp->fs, FR_INT_ERR);
- nsect += fp->csect;
- fp->csect++;
+ if (clst != 0) {
+ while (ofs > bcs) { /* Cluster following loop */
+#if !_FS_READONLY
+ if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
+ clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
+ if (clst == 0) { /* When disk gets full, clip file size */
+ ofs = bcs; break;
+ }
+ } else
+#endif
+ clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
+ fp->clust = clst;
+ fp->fptr += bcs;
+ ofs -= bcs;
+ }
+ fp->fptr += ofs;
+ if (ofs % SS(fp->fs)) {
+ nsect = clust2sect(fp->fs, clst); /* Current sector */
+ if (!nsect) ABORT(fp->fs, FR_INT_ERR);
+ nsect += ofs / SS(fp->fs);
+ }
}
}
- }
- if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) {
+ if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */
#if !_FS_TINY
#if !_FS_READONLY
- if (fp->flag & FA__DIRTY) { /* Write-back dirty buffer if needed */
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
- fp->flag &= ~FA__DIRTY;
- }
+ if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
#endif
- if (disk_read(fp->fs->drive, fp->buf, nsect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
+ if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */
+ ABORT(fp->fs, FR_DISK_ERR);
#endif
- fp->dsect = nsect;
- }
+ fp->dsect = nsect;
+ }
#if !_FS_READONLY
- if (fp->fptr > fp->fsize) { /* Set changed flag if the file size is extended */
- fp->fsize = fp->fptr;
- fp->flag |= FA__WRITTEN;
- }
+ if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */
+ fp->fsize = fp->fptr;
+ fp->flag |= FA__WRITTEN;
+ }
#endif
+ }
LEAVE_FF(fp->fs, res);
}
-
#if _FS_MINIMIZE <= 1
/*-----------------------------------------------------------------------*/
/* Create a Directroy Object */
FRESULT f_opendir (
DIR *dj, /* Pointer to directory object to create */
- const XCHAR *path /* Pointer to the directory path */
+ const TCHAR *path /* Pointer to the directory path */
)
{
FRESULT res;
- NAMEBUF(sfn, lfn);
- BYTE *dir;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj->fs, 0);
if (res == FR_OK) {
- INITBUF((*dj), sfn, lfn);
+ INIT_BUF(*dj);
res = follow_path(dj, path); /* Follow the path to the directory */
+ FREE_BUF();
if (res == FR_OK) { /* Follow completed */
- dir = dj->dir;
- if (dir) { /* It is not the root dir */
- if (dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
- dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ if (dj->dir) { /* It is not the root dir */
+ if (dj->dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
+ dj->sclust = LD_CLUST(dj->dir);
} else { /* The object is not a directory */
res = FR_NO_PATH;
}
}
if (res == FR_OK) {
dj->id = dj->fs->id;
- res = dir_seek(dj, 0); /* Rewind dir */
+ res = dir_sdi(dj, 0); /* Rewind dir */
}
}
if (res == FR_NO_FILE) res = FR_NO_PATH;
)
{
FRESULT res;
- NAMEBUF(sfn, lfn);
+ DEF_NAMEBUF;
res = validate(dj->fs, dj->id); /* Check validity of the object */
if (res == FR_OK) {
- INITBUF((*dj), sfn, lfn);
if (!fno) {
- res = dir_seek(dj, 0);
+ res = dir_sdi(dj, 0); /* Rewind the directory object */
} else {
- res = dir_read(dj);
- if (res == FR_NO_FILE) {
+ INIT_BUF(*dj);
+ res = dir_read(dj); /* Read an directory item */
+ if (res == FR_NO_FILE) { /* Reached end of dir */
dj->sect = 0;
res = FR_OK;
}
if (res == FR_OK) { /* A valid entry is found */
get_fileinfo(dj, fno); /* Get the object information */
- res = dir_next(dj, FALSE); /* Increment index for next */
+ res = dir_next(dj, 0); /* Increment index for next */
if (res == FR_NO_FILE) {
dj->sect = 0;
res = FR_OK;
}
}
+ FREE_BUF();
}
}
/*-----------------------------------------------------------------------*/
FRESULT f_stat (
- const XCHAR *path, /* Pointer to the file path */
+ const TCHAR *path, /* Pointer to the file path */
FILINFO *fno /* Pointer to file information to return */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 0);
if (res == FR_OK) {
- INITBUF(dj, sfn, lfn);
+ INIT_BUF(dj);
res = follow_path(&dj, path); /* Follow the file path */
- if (res == FR_OK) { /* Follwo completed */
- if (dj.dir) /* Found an object */
+ if (res == FR_OK) { /* Follow completed */
+ if (dj.dir) /* Found an object */
get_fileinfo(&dj, fno);
- else /* It is root dir */
+ else /* It is root dir */
res = FR_INVALID_NAME;
}
+ FREE_BUF();
}
LEAVE_FF(dj.fs, res);
/*-----------------------------------------------------------------------*/
FRESULT f_getfree (
- const XCHAR *path, /* Pointer to the logical drive number (root dir) */
+ const TCHAR *path, /* Pointer to the logical drive number (root dir) */
DWORD *nclst, /* Pointer to the variable to return number of free clusters */
FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */
)
/* Get drive number */
res = chk_mounted(&path, fatfs, 0);
- if (res != FR_OK) LEAVE_FF(*fatfs, res);
-
- /* If number of free cluster is valid, return it without cluster scan. */
- if ((*fatfs)->free_clust <= (*fatfs)->max_clust - 2) {
- *nclst = (*fatfs)->free_clust;
- LEAVE_FF(*fatfs, FR_OK);
- }
-
- /* Get number of free clusters */
- fat = (*fatfs)->fs_type;
- n = 0;
- if (fat == FS_FAT12) {
- clst = 2;
- do {
- stat = get_fat(*fatfs, clst);
- if (stat == 0xFFFFFFFF) LEAVE_FF(*fatfs, FR_DISK_ERR);
- if (stat == 1) LEAVE_FF(*fatfs, FR_INT_ERR);
- if (stat == 0) n++;
- } while (++clst < (*fatfs)->max_clust);
- } else {
- clst = (*fatfs)->max_clust;
- sect = (*fatfs)->fatbase;
- i = 0; p = 0;
- do {
- if (!i) {
- res = move_window(*fatfs, sect++);
- if (res != FR_OK)
- LEAVE_FF(*fatfs, res);
- p = (*fatfs)->win;
- i = SS(*fatfs);
- }
- if (fat == FS_FAT16) {
- if (LD_WORD(p) == 0) n++;
- p += 2; i -= 2;
+ if (res == FR_OK) {
+ /* If free_clust is valid, return it without full cluster scan */
+ if ((*fatfs)->free_clust <= (*fatfs)->n_fatent - 2) {
+ *nclst = (*fatfs)->free_clust;
+ } else {
+ /* Get number of free clusters */
+ fat = (*fatfs)->fs_type;
+ n = 0;
+ if (fat == FS_FAT12) {
+ clst = 2;
+ do {
+ stat = get_fat(*fatfs, clst);
+ if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
+ if (stat == 1) { res = FR_INT_ERR; break; }
+ if (stat == 0) n++;
+ } while (++clst < (*fatfs)->n_fatent);
} else {
- if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
- p += 4; i -= 4;
+ clst = (*fatfs)->n_fatent;
+ sect = (*fatfs)->fatbase;
+ i = 0; p = 0;
+ do {
+ if (!i) {
+ res = move_window(*fatfs, sect++);
+ if (res != FR_OK) break;
+ p = (*fatfs)->win;
+ i = SS(*fatfs);
+ }
+ if (fat == FS_FAT16) {
+ if (LD_WORD(p) == 0) n++;
+ p += 2; i -= 2;
+ } else {
+ if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
+ p += 4; i -= 4;
+ }
+ } while (--clst);
}
- } while (--clst);
+ (*fatfs)->free_clust = n;
+ if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
+ *nclst = n;
+ }
}
- (*fatfs)->free_clust = n;
- if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
- *nclst = n;
-
- LEAVE_FF(*fatfs, FR_OK);
+ LEAVE_FF(*fatfs, res);
}
res = validate(fp->fs, fp->id); /* Check validity of the object */
- if (res != FR_OK) LEAVE_FF(fp->fs, res);
- if (fp->flag & FA__ERROR) /* Check abort flag */
- LEAVE_FF(fp->fs, FR_INT_ERR);
- if (!(fp->flag & FA_WRITE)) /* Check access mode */
- LEAVE_FF(fp->fs, FR_DENIED);
-
- if (fp->fsize > fp->fptr) {
- fp->fsize = fp->fptr; /* Set file size to current R/W point */
- fp->flag |= FA__WRITTEN;
- if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
- res = remove_chain(fp->fs, fp->org_clust);
- fp->org_clust = 0;
- } else { /* When truncate a part of the file, remove remaining clusters */
- ncl = get_fat(fp->fs, fp->curr_clust);
- res = FR_OK;
- if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
- if (ncl == 1) res = FR_INT_ERR;
- if (res == FR_OK && ncl < fp->fs->max_clust) {
- res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF);
- if (res == FR_OK) res = remove_chain(fp->fs, ncl);
+ if (res == FR_OK) {
+ if (fp->flag & FA__ERROR) { /* Check abort flag */
+ res = FR_INT_ERR;
+ } else {
+ if (!(fp->flag & FA_WRITE)) /* Check access mode */
+ res = FR_DENIED;
+ }
+ }
+ if (res == FR_OK) {
+ if (fp->fsize > fp->fptr) {
+ fp->fsize = fp->fptr; /* Set file size to current R/W point */
+ fp->flag |= FA__WRITTEN;
+ if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
+ res = remove_chain(fp->fs, fp->sclust);
+ fp->sclust = 0;
+ } else { /* When truncate a part of the file, remove remaining clusters */
+ ncl = get_fat(fp->fs, fp->clust);
+ res = FR_OK;
+ if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
+ if (ncl == 1) res = FR_INT_ERR;
+ if (res == FR_OK && ncl < fp->fs->n_fatent) {
+ res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);
+ if (res == FR_OK) res = remove_chain(fp->fs, ncl);
+ }
}
}
+ if (res != FR_OK) fp->flag |= FA__ERROR;
}
- if (res != FR_OK) fp->flag |= FA__ERROR;
LEAVE_FF(fp->fs, res);
}
/*-----------------------------------------------------------------------*/
FRESULT f_unlink (
- const XCHAR *path /* Pointer to the file or directory path */
+ const TCHAR *path /* Pointer to the file or directory path */
)
{
FRESULT res;
DIR dj, sdj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
DWORD dclst;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 1);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
-
- INITBUF(dj, sfn, lfn);
- res = follow_path(&dj, path); /* Follow the file path */
- if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
- res = FR_INVALID_NAME;
- if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */
-
- dir = dj.dir;
- if (!dir) /* Is it the root directory? */
- LEAVE_FF(dj.fs, FR_INVALID_NAME);
- if (dir[DIR_Attr] & AM_RDO) /* Is it a R/O object? */
- LEAVE_FF(dj.fs, FR_DENIED);
- dclst = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
-
- if (dir[DIR_Attr] & AM_DIR) { /* It is a sub-directory */
- if (dclst < 2) LEAVE_FF(dj.fs, FR_INT_ERR);
- mem_cpy(&sdj, &dj, sizeof(DIR)); /* Check if the sub-dir is empty or not */
- sdj.sclust = dclst;
- res = dir_seek(&sdj, 2);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
- res = dir_read(&sdj);
- if (res == FR_OK) res = FR_DENIED; /* Not empty sub-dir */
- if (res != FR_NO_FILE) LEAVE_FF(dj.fs, res);
- }
-
- res = dir_remove(&dj); /* Remove directory entry */
if (res == FR_OK) {
- if (dclst)
- res = remove_chain(dj.fs, dclst); /* Remove the cluster chain */
- if (res == FR_OK) res = sync(dj.fs);
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME; /* Cannot remove dot entry */
+#if _FS_SHARE
+ if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */
+#endif
+ if (res == FR_OK) { /* The object is accessible */
+ dir = dj.dir;
+ if (!dir) {
+ res = FR_INVALID_NAME; /* Cannot remove the start directory */
+ } else {
+ if (dir[DIR_Attr] & AM_RDO)
+ res = FR_DENIED; /* Cannot remove R/O object */
+ }
+ dclst = LD_CLUST(dir);
+ if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */
+ if (dclst < 2) {
+ res = FR_INT_ERR;
+ } else {
+ mem_cpy(&sdj, &dj, sizeof(DIR)); /* Check if the sub-dir is empty or not */
+ sdj.sclust = dclst;
+ res = dir_sdi(&sdj, 2); /* Exclude dot entries */
+ if (res == FR_OK) {
+ res = dir_read(&sdj);
+ if (res == FR_OK /* Not empty dir */
+#if _FS_RPATH
+ || dclst == sdj.fs->cdir /* Current dir */
+#endif
+ ) res = FR_DENIED;
+ if (res == FR_NO_FILE) res = FR_OK; /* Empty */
+ }
+ }
+ }
+ if (res == FR_OK) {
+ res = dir_remove(&dj); /* Remove the directory entry */
+ if (res == FR_OK) {
+ if (dclst) /* Remove the cluster chain if exist */
+ res = remove_chain(dj.fs, dclst);
+ if (res == FR_OK) res = sync(dj.fs);
+ }
+ }
+ }
+ FREE_BUF();
}
-
LEAVE_FF(dj.fs, res);
}
/*-----------------------------------------------------------------------*/
FRESULT f_mkdir (
- const XCHAR *path /* Pointer to the directory path */
+ const TCHAR *path /* Pointer to the directory path */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir, n;
- DWORD dsect, dclst, pclst, tim;
+ DWORD dsc, dcl, pcl, tim = get_fattime();
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 1);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
-
- INITBUF(dj, sfn, lfn);
- res = follow_path(&dj, path); /* Follow the file path */
- if (res == FR_OK) res = FR_EXIST; /* Any file or directory is already existing */
- if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
- res = FR_INVALID_NAME;
- if (res != FR_NO_FILE) /* Any error occured */
- LEAVE_FF(dj.fs, res);
-
- dclst = create_chain(dj.fs, 0); /* Allocate a new cluster for new directory table */
- res = FR_OK;
- if (dclst == 0) res = FR_DENIED;
- if (dclst == 1) res = FR_INT_ERR;
- if (dclst == 0xFFFFFFFF) res = FR_DISK_ERR;
- if (res == FR_OK)
- res = move_window(dj.fs, 0);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
- dsect = clust2sect(dj.fs, dclst);
-
- dir = dj.fs->win; /* Initialize the new directory table */
- mem_set(dir, 0, SS(dj.fs));
- mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
- dir[DIR_Name] = '.';
- dir[DIR_Attr] = AM_DIR;
- tim = get_fattime();
- ST_DWORD(dir+DIR_WrtTime, tim);
- ST_WORD(dir+DIR_FstClusLO, dclst);
- ST_WORD(dir+DIR_FstClusHI, dclst >> 16);
- mem_cpy(dir+32, dir, 32); /* Create ".." entry */
- dir[33] = '.';
- pclst = dj.sclust;
- if (dj.fs->fs_type == FS_FAT32 && pclst == dj.fs->dirbase)
- pclst = 0;
- ST_WORD(dir+32+DIR_FstClusLO, pclst);
- ST_WORD(dir+32+DIR_FstClusHI, pclst >> 16);
- for (n = 0; n < dj.fs->csize; n++) { /* Write dot entries and clear left sectors */
- dj.fs->winsect = dsect++;
- dj.fs->wflag = 1;
- res = move_window(dj.fs, 0);
- if (res) LEAVE_FF(dj.fs, res);
- mem_set(dir, 0, SS(dj.fs));
- }
-
- res = dir_register(&dj);
- if (res != FR_OK) {
- remove_chain(dj.fs, dclst);
- } else {
- dir = dj.dir;
- dir[DIR_Attr] = AM_DIR; /* Attribute */
- ST_DWORD(dir+DIR_WrtTime, tim); /* Crated time */
- ST_WORD(dir+DIR_FstClusLO, dclst); /* Table start cluster */
- ST_WORD(dir+DIR_FstClusHI, dclst >> 16);
- dj.fs->wflag = 1;
- res = sync(dj.fs);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
+ if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME;
+ if (res == FR_NO_FILE) { /* Can create a new directory */
+ dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
+ res = FR_OK;
+ if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
+ if (dcl == 1) res = FR_INT_ERR;
+ if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
+ if (res == FR_OK) /* Flush FAT */
+ res = move_window(dj.fs, 0);
+ if (res == FR_OK) { /* Initialize the new directory table */
+ dsc = clust2sect(dj.fs, dcl);
+ dir = dj.fs->win;
+ mem_set(dir, 0, SS(dj.fs));
+ mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
+ dir[DIR_Name] = '.';
+ dir[DIR_Attr] = AM_DIR;
+ ST_DWORD(dir+DIR_WrtTime, tim);
+ ST_CLUST(dir, dcl);
+ mem_cpy(dir+SZ_DIR, dir, SZ_DIR); /* Create ".." entry */
+ dir[33] = '.'; pcl = dj.sclust;
+ if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
+ pcl = 0;
+ ST_CLUST(dir+SZ_DIR, pcl);
+ for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
+ dj.fs->winsect = dsc++;
+ dj.fs->wflag = 1;
+ res = move_window(dj.fs, 0);
+ if (res != FR_OK) break;
+ mem_set(dir, 0, SS(dj.fs));
+ }
+ }
+ if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
+ if (res != FR_OK) {
+ remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
+ } else {
+ dir = dj.dir;
+ dir[DIR_Attr] = AM_DIR; /* Attribute */
+ ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */
+ ST_CLUST(dir, dcl); /* Table start cluster */
+ dj.fs->wflag = 1;
+ res = sync(dj.fs);
+ }
+ }
+ FREE_BUF();
}
LEAVE_FF(dj.fs, res);
/*-----------------------------------------------------------------------*/
-/* Change File Attribute */
+/* Change Attribute */
/*-----------------------------------------------------------------------*/
FRESULT f_chmod (
- const XCHAR *path, /* Pointer to the file path */
+ const TCHAR *path, /* Pointer to the file path */
BYTE value, /* Attribute bits */
BYTE mask /* Attribute mask to change */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 1);
if (res == FR_OK) {
- INITBUF(dj, sfn, lfn);
+ INIT_BUF(dj);
res = follow_path(&dj, path); /* Follow the file path */
+ FREE_BUF();
if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
res = FR_INVALID_NAME;
if (res == FR_OK) {
/*-----------------------------------------------------------------------*/
FRESULT f_utime (
- const XCHAR *path, /* Pointer to the file/directory name */
- const FILINFO *fno /* Pointer to the timestamp to be set */
+ const TCHAR *path, /* Pointer to the file/directory name */
+ const FILINFO *fno /* Pointer to the time stamp to be set */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 1);
if (res == FR_OK) {
- INITBUF(dj, sfn, lfn);
+ INIT_BUF(dj);
res = follow_path(&dj, path); /* Follow the file path */
+ FREE_BUF();
if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
res = FR_INVALID_NAME;
if (res == FR_OK) {
dir = dj.dir;
- if (!dir) { /* Root directory */
+ if (!dir) { /* Root directory */
res = FR_INVALID_NAME;
- } else { /* File or sub-directory */
+ } else { /* File or sub-directory */
ST_WORD(dir+DIR_WrtTime, fno->ftime);
ST_WORD(dir+DIR_WrtDate, fno->fdate);
dj.fs->wflag = 1;
/*-----------------------------------------------------------------------*/
FRESULT f_rename (
- const XCHAR *path_old, /* Pointer to the old name */
- const XCHAR *path_new /* Pointer to the new name */
+ const TCHAR *path_old, /* Pointer to the old name */
+ const TCHAR *path_new /* Pointer to the new name */
)
{
FRESULT res;
- DIR dj_old, dj_new;
- NAMEBUF(sfn, lfn);
+ DIR djo, djn;
BYTE buf[21], *dir;
DWORD dw;
+ DEF_NAMEBUF;
- INITBUF(dj_old, sfn, lfn);
- res = chk_mounted(&path_old, &dj_old.fs, 1);
+ res = chk_mounted(&path_old, &djo.fs, 1);
if (res == FR_OK) {
- dj_new.fs = dj_old.fs;
- res = follow_path(&dj_old, path_old); /* Check old object */
- if (_FS_RPATH && res == FR_OK && (dj_old.fn[NS] & NS_DOT))
+ djn.fs = djo.fs;
+ INIT_BUF(djo);
+ res = follow_path(&djo, path_old); /* Check old object */
+ if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT))
res = FR_INVALID_NAME;
- }
- if (res != FR_OK) LEAVE_FF(dj_old.fs, res); /* The old object is not found */
-
- if (!dj_old.dir) LEAVE_FF(dj_old.fs, FR_NO_FILE); /* Is root dir? */
- mem_cpy(buf, dj_old.dir+DIR_Attr, 21); /* Save the object information */
-
- mem_cpy(&dj_new, &dj_old, sizeof(DIR));
- res = follow_path(&dj_new, path_new); /* Check new object */
- if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
- if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
- res = dir_register(&dj_new); /* Register the new object */
- if (res == FR_OK) {
- dir = dj_new.dir; /* Copy object information into new entry */
- mem_cpy(dir+13, buf+2, 19);
- dir[DIR_Attr] = buf[0] | AM_ARC;
- dj_old.fs->wflag = 1;
- if (dir[DIR_Attr] & AM_DIR) { /* Update .. entry in the directory if needed */
- dw = clust2sect(dj_new.fs, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));
- if (!dw) {
- res = FR_INT_ERR;
- } else {
- res = move_window(dj_new.fs, dw);
- dir = dj_new.fs->win+32;
- if (res == FR_OK && dir[1] == '.') {
- dw = (dj_new.fs->fs_type == FS_FAT32 && dj_new.sclust == dj_new.fs->dirbase) ? 0 : dj_new.sclust;
- ST_WORD(dir+DIR_FstClusLO, dw);
- ST_WORD(dir+DIR_FstClusHI, dw >> 16);
- dj_new.fs->wflag = 1;
+#if _FS_SHARE
+ if (res == FR_OK) res = chk_lock(&djo, 2);
+#endif
+ if (res == FR_OK) { /* Old object is found */
+ if (!djo.dir) { /* Is root dir? */
+ res = FR_NO_FILE;
+ } else {
+ mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */
+ mem_cpy(&djn, &djo, sizeof(DIR)); /* Check new object */
+ res = follow_path(&djn, path_new);
+ if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
+ if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
+/* Start critical section that any interruption or error can cause cross-link */
+ res = dir_register(&djn); /* Register the new entry */
+ if (res == FR_OK) {
+ dir = djn.dir; /* Copy object information except for name */
+ mem_cpy(dir+13, buf+2, 19);
+ dir[DIR_Attr] = buf[0] | AM_ARC;
+ djo.fs->wflag = 1;
+ if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */
+ dw = clust2sect(djn.fs, LD_CLUST(dir));
+ if (!dw) {
+ res = FR_INT_ERR;
+ } else {
+ res = move_window(djn.fs, dw);
+ dir = djn.fs->win+SZ_DIR; /* .. entry */
+ if (res == FR_OK && dir[1] == '.') {
+ dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust;
+ ST_CLUST(dir, dw);
+ djn.fs->wflag = 1;
+ }
+ }
+ }
+ if (res == FR_OK) {
+ res = dir_remove(&djo); /* Remove old entry */
+ if (res == FR_OK)
+ res = sync(djo.fs);
+ }
}
+/* End critical section */
}
}
- if (res == FR_OK) {
- res = dir_remove(&dj_old); /* Remove old entry */
- if (res == FR_OK)
- res = sync(dj_old.fs);
- }
}
+ FREE_BUF();
}
-
- LEAVE_FF(dj_old.fs, res);
+ LEAVE_FF(djo.fs, res);
}
#endif /* !_FS_READONLY */
/*-----------------------------------------------------------------------*/
-/* Forward data to the stream directly (Available on only _FS_TINY cfg) */
+/* Forward data to the stream directly (available on only tiny cfg) */
/*-----------------------------------------------------------------------*/
#if _USE_FORWARD && _FS_TINY
FRESULT res;
DWORD remain, clst, sect;
UINT rcnt;
+ BYTE csect;
- *bf = 0;
+ *bf = 0; /* Initialize byte counter */
res = validate(fp->fs, fp->id); /* Check validity of the object */
if (res != FR_OK) LEAVE_FF(fp->fs, res);
remain = fp->fsize - fp->fptr;
if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
- for ( ; btr && (*func)(NULL, 0); /* Repeat until all data transferred or stream becomes busy */
+ for ( ; btr && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */
fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
- if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
+ if (!csect) { /* On the cluster boundary? */
clst = (fp->fptr == 0) ? /* On the top of the file? */
- fp->org_clust : get_fat(fp->fs, fp->curr_clust);
+ fp->sclust : get_fat(fp->fs, fp->clust);
if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->curr_clust = clst; /* Update current cluster */
- fp->csect = 0; /* Reset sector address in the cluster */
+ fp->clust = clst; /* Update current cluster */
}
- fp->csect++; /* Next sector address in the cluster */
}
- sect = clust2sect(fp->fs, fp->curr_clust); /* Get current data sector */
+ sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */
if (!sect) ABORT(fp->fs, FR_INT_ERR);
- sect += fp->csect - 1;
+ sect += csect;
if (move_window(fp->fs, sect)) /* Move sector window */
ABORT(fp->fs, FR_DISK_ERR);
fp->dsect = sect;
/*-----------------------------------------------------------------------*/
/* Create File System on the Drive */
/*-----------------------------------------------------------------------*/
-#define N_ROOTDIR 512 /* Multiple of 32 and <= 2048 */
-#define N_FATS 1 /* 1 or 2 */
-#define MAX_SECTOR 131072000UL /* Maximum partition size */
-#define MIN_SECTOR 2000UL /* Minimum partition size */
+#define N_ROOTDIR 512 /* Number of root dir entries for FAT12/16 */
+#define N_FATS 1 /* Number of FAT copies (1 or 2) */
FRESULT f_mkfs (
- BYTE drv, /* Logical drive number */
- BYTE partition, /* Partitioning rule 0:FDISK, 1:SFD */
- WORD allocsize /* Allocation unit size [bytes] */
+ BYTE drv, /* Logical drive number */
+ BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
+ UINT au /* Allocation unit size [bytes] */
)
{
- static const DWORD sstbl[] = { 2048000, 1024000, 512000, 256000, 128000, 64000, 32000, 16000, 8000, 4000, 0 };
- static const WORD cstbl[] = { 32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512 };
- BYTE fmt, m, *tbl;
- DWORD b_part, b_fat, b_dir, b_data; /* Area offset (LBA) */
- DWORD n_part, n_rsv, n_fat, n_dir; /* Area size */
- DWORD n_clst, d, n;
- WORD as;
+ static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
+ static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
+ BYTE fmt, md, *tbl;
+ DWORD n_clst, vs, n, wsect;
+ UINT i;
+ DWORD b_vol, b_fat, b_dir, b_data; /* Offset (LBA) */
+ DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */
FATFS *fs;
DSTATUS stat;
- /* Check validity of the parameters */
- if (drv >= _DRIVES) return FR_INVALID_DRIVE;
- if (partition >= 2) return FR_MKFS_ABORTED;
-
/* Check mounted drive and clear work area */
+ if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
fs = FatFs[drv];
if (!fs) return FR_NOT_ENABLED;
fs->fs_type = 0;
stat = disk_initialize(drv);
if (stat & STA_NOINIT) return FR_NOT_READY;
if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
-#if _MAX_SS != 512 /* Get disk sector size */
- if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK
- || SS(fs) > _MAX_SS)
- return FR_MKFS_ABORTED;
+#if _MAX_SS != 512 /* Get disk sector size */
+ if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK)
+ return FR_DISK_ERR;
#endif
- if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_part) != RES_OK || n_part < MIN_SECTOR)
- return FR_MKFS_ABORTED;
- if (n_part > MAX_SECTOR) n_part = MAX_SECTOR;
- b_part = (!partition) ? 63 : 0; /* Boot sector */
- n_part -= b_part;
- for (d = 512; d <= 32768U && d != allocsize; d <<= 1) ; /* Check validity of the allocation unit size */
- if (d != allocsize) allocsize = 0;
- if (!allocsize) { /* Auto selection of cluster size */
- d = n_part;
- for (as = SS(fs); as > 512U; as >>= 1) d >>= 1;
- for (n = 0; d < sstbl[n]; n++) ;
- allocsize = cstbl[n];
- }
- if (allocsize < SS(fs)) allocsize = SS(fs);
-
- allocsize /= SS(fs); /* Number of sectors per cluster */
-
- /* Pre-compute number of clusters and FAT type */
- n_clst = n_part / allocsize;
+ if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
+ return FR_DISK_ERR;
+ b_vol = (sfd) ? 0 : 63; /* Volume start sector */
+ n_vol -= b_vol;
+ if (au & (au - 1)) au = 0; /* Check validity of the AU size */
+ if (!au) { /* AU auto selection */
+ vs = n_vol / (2000 / (SS(fs) / 512));
+ for (i = 0; vs < vst[i]; i++) ;
+ au = cst[i];
+ }
+ au /= SS(fs); /* Number of sectors per cluster */
+ if (au == 0) au = 1;
+ if (au > 128) au = 128;
+
+ /* Pre-compute number of clusters and FAT syb-type */
+ n_clst = n_vol / au;
fmt = FS_FAT12;
- if (n_clst >= 0xFF5) fmt = FS_FAT16;
- if (n_clst >= 0xFFF5) fmt = FS_FAT32;
+ if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
+ if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
/* Determine offset and size of FAT structure */
- switch (fmt) {
- case FS_FAT12:
- n_fat = ((n_clst * 3 + 1) / 2 + 3 + SS(fs) - 1) / SS(fs);
- n_rsv = 1 + partition;
- n_dir = N_ROOTDIR * 32 / SS(fs);
- break;
- case FS_FAT16:
- n_fat = ((n_clst * 2) + 4 + SS(fs) - 1) / SS(fs);
- n_rsv = 1 + partition;
- n_dir = N_ROOTDIR * 32 / SS(fs);
- break;
- default:
+ if (fmt == FS_FAT32) {
n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
- n_rsv = 33 - partition;
+ n_rsv = 32;
n_dir = 0;
+ } else {
+ n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
+ n_fat = (n_fat + SS(fs) - 1) / SS(fs);
+ n_rsv = 1;
+ n_dir = (DWORD)N_ROOTDIR * SZ_DIR / SS(fs);
}
- b_fat = b_part + n_rsv; /* FATs start sector */
- b_dir = b_fat + n_fat * N_FATS; /* Directory start sector */
- b_data = b_dir + n_dir; /* Data start sector */
+ b_fat = b_vol + n_rsv; /* FAT area start sector */
+ b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
+ b_data = b_dir + n_dir; /* Data area start sector */
+ if (n_vol < b_data + au) return FR_MKFS_ABORTED; /* Too small volume */
/* Align data start sector to erase block boundary (for flash memory media) */
- if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_MKFS_ABORTED;
- n = (b_data + n - 1) & ~(n - 1);
- n_fat += (n - b_data) / N_FATS;
- /* b_dir and b_data are no longer used below */
-
- /* Determine number of cluster and final check of validity of the FAT type */
- n_clst = (n_part - n_rsv - n_fat * N_FATS - n_dir) / allocsize;
- if ( (fmt == FS_FAT16 && n_clst < 0xFF5)
- || (fmt == FS_FAT32 && n_clst < 0xFFF5))
+ if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK || !n || n > 32768) n = 1;
+ n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */
+ n = (n - b_data) / N_FATS;
+ if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */
+ n_rsv += n;
+ b_fat += n;
+ } else { /* FAT12/16: Expand FAT size */
+ n_fat += n;
+ }
+
+ /* Determine number of clusters and final check of validity of the FAT sub-type */
+ n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
+ if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
+ || (fmt == FS_FAT32 && n_clst < MIN_FAT32))
return FR_MKFS_ABORTED;
- /* Create partition table if needed */
- if (!partition) {
- DWORD n_disk = b_part + n_part;
+ /* Create partition table if required */
+ if (sfd) { /* No patition table (SFD) */
+ md = 0xF0;
+ } else { /* With patition table (FDISK) */
+ DWORD n_disk = b_vol + n_vol;
mem_set(fs->win, 0, SS(fs));
tbl = fs->win+MBR_Table;
- ST_DWORD(tbl, 0x00010180); /* Partition start in CHS */
+ ST_DWORD(tbl, 0x00010180); /* Partition start in CHS */
if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */
n_disk = n_disk / 63 / 255;
tbl[7] = (BYTE)n_disk;
tbl[6] = (BYTE)((n_disk >> 2) | 63);
} else {
- ST_WORD(&tbl[6], 0xFFFF);
+ ST_WORD(&tbl[6], 0xFFFF); /* CHS saturated */
}
tbl[5] = 254;
- if (fmt != FS_FAT32) /* System ID */
- tbl[4] = (n_part < 0x10000) ? 0x04 : 0x06;
+ if (fmt != FS_FAT32) /* System ID */
+ tbl[4] = (n_vol < 0x10000) ? 0x04 : 0x06;
else
tbl[4] = 0x0c;
- ST_DWORD(tbl+8, 63); /* Partition start in LBA */
- ST_DWORD(tbl+12, n_part); /* Partition size in LBA */
- ST_WORD(tbl+64, 0xAA55); /* Signature */
- if (disk_write(drv, fs->win, 0, 1) != RES_OK)
+ ST_DWORD(tbl+8, 63); /* Partition start in LBA */
+ ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
+ ST_WORD(fs->win+BS_55AA, 0xAA55); /* MBR signature */
+ if (disk_write(drv, fs->win, 0, 1) != RES_OK) /* Put the MBR into first physical sector */
return FR_DISK_ERR;
- partition = 0xF8;
- } else {
- partition = 0xF0;
+ md = 0xF8;
}
- /* Create boot record */
- tbl = fs->win; /* Clear buffer */
+ /* Create volume boot record */
+ tbl = fs->win; /* Clear sector */
mem_set(tbl, 0, SS(fs));
- ST_DWORD(tbl+BS_jmpBoot, 0x90FEEB); /* Boot code (jmp $, nop) */
- ST_WORD(tbl+BPB_BytsPerSec, SS(fs)); /* Sector size */
- tbl[BPB_SecPerClus] = (BYTE)allocsize; /* Sectors per cluster */
- ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
- tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
- ST_WORD(tbl+BPB_RootEntCnt, SS(fs) / 32 * n_dir); /* Number of rootdir entries */
- if (n_part < 0x10000) { /* Number of total sectors */
- ST_WORD(tbl+BPB_TotSec16, n_part);
+ mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
+ i = SS(fs); /* Sector size */
+ ST_WORD(tbl+BPB_BytsPerSec, i);
+ tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
+ ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
+ tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
+ i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
+ ST_WORD(tbl+BPB_RootEntCnt, i);
+ if (n_vol < 0x10000) { /* Number of total sectors */
+ ST_WORD(tbl+BPB_TotSec16, n_vol);
} else {
- ST_DWORD(tbl+BPB_TotSec32, n_part);
- }
- tbl[BPB_Media] = partition; /* Media descripter */
- ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
- ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
- ST_DWORD(tbl+BPB_HiddSec, b_part); /* Hidden sectors */
- n = get_fattime(); /* Use current time as a VSN */
- if (fmt != FS_FAT32) {
- ST_DWORD(tbl+BS_VolID, n); /* Volume serial number */
- ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of secters per FAT */
- tbl[BS_DrvNum] = 0x80; /* Drive number */
- tbl[BS_BootSig] = 0x29; /* Extended boot signature */
- mem_cpy(tbl+BS_VolLab, "NO NAME FAT ", 19); /* Volume lavel, FAT signature */
+ ST_DWORD(tbl+BPB_TotSec32, n_vol);
+ }
+ tbl[BPB_Media] = md; /* Media descriptor */
+ ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
+ ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
+ ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */
+ n = get_fattime(); /* Use current time as VSN */
+ if (fmt == FS_FAT32) {
+ ST_DWORD(tbl+BS_VolID32, n); /* VSN */
+ ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */
+ ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */
+ ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */
+ ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */
+ tbl[BS_DrvNum32] = 0x80; /* Drive number */
+ tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
+ mem_cpy(tbl+BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
} else {
- ST_DWORD(tbl+BS_VolID32, n); /* Volume serial number */
- ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of secters per FAT */
- ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory cluster (2) */
- ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (bs+1) */
- ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (bs+6) */
- tbl[BS_DrvNum32] = 0x80; /* Drive number */
- tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
- mem_cpy(tbl+BS_VolLab32, "NO NAME FAT32 ", 19); /* Volume lavel, FAT signature */
- }
- ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature */
- if (SS(fs) > 512U) {
- ST_WORD(tbl+SS(fs)-2, 0xAA55);
- }
- if (disk_write(drv, tbl, b_part+0, 1) != RES_OK)
+ ST_DWORD(tbl+BS_VolID, n); /* VSN */
+ ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */
+ tbl[BS_DrvNum] = 0x80; /* Drive number */
+ tbl[BS_BootSig] = 0x29; /* Extended boot signature */
+ mem_cpy(tbl+BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
+ }
+ ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
+ if (disk_write(drv, tbl, b_vol, 1) != RES_OK) /* Write VBR */
return FR_DISK_ERR;
- if (fmt == FS_FAT32)
- disk_write(drv, tbl, b_part+6, 1);
+ if (fmt == FS_FAT32) /* Write backup VBR if needed (VBR+6) */
+ disk_write(drv, tbl, b_vol + 6, 1);
/* Initialize FAT area */
- for (m = 0; m < N_FATS; m++) {
- mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
+ wsect = b_fat;
+ for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */
+ mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
+ n = md; /* Media descriptor byte */
if (fmt != FS_FAT32) {
- n = (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
- n |= partition;
- ST_DWORD(tbl, n); /* Reserve cluster #0-1 (FAT12/16) */
+ n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
+ ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */
} else {
- ST_DWORD(tbl+0, 0xFFFFFFF8); /* Reserve cluster #0-1 (FAT32) */
+ n |= 0xFFFFFF00;
+ ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */
ST_DWORD(tbl+4, 0xFFFFFFFF);
ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
}
- if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+ if (disk_write(drv, tbl, wsect++, 1) != RES_OK)
return FR_DISK_ERR;
- mem_set(tbl, 0, SS(fs)); /* Following FAT entries are filled by zero */
- for (n = 1; n < n_fat; n++) {
- if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+ mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
+ for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
+ if (disk_write(drv, tbl, wsect++, 1) != RES_OK)
return FR_DISK_ERR;
}
}
- /* Initialize Root directory */
- m = (BYTE)((fmt == FS_FAT32) ? allocsize : n_dir);
+ /* Initialize root directory */
+ i = (fmt == FS_FAT32) ? au : n_dir;
do {
- if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+ if (disk_write(drv, tbl, wsect++, 1) != RES_OK)
return FR_DISK_ERR;
- } while (--m);
+ } while (--i);
+
+#if _USE_ERASE /* Erase data area if needed */
+ {
+ DWORD eb[2];
- /* Create FSInfo record if needed */
+ eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;
+ disk_ioctl(drv, CTRL_ERASE_SECTOR, eb);
+ }
+#endif
+
+ /* Create FSInfo if needed */
if (fmt == FS_FAT32) {
- ST_WORD(tbl+BS_55AA, 0xAA55);
ST_DWORD(tbl+FSI_LeadSig, 0x41615252);
ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
- ST_DWORD(tbl+FSI_Free_Count, n_clst - 1);
- ST_DWORD(tbl+FSI_Nxt_Free, 0xFFFFFFFF);
- disk_write(drv, tbl, b_part+1, 1);
- disk_write(drv, tbl, b_part+7, 1);
+ ST_DWORD(tbl+FSI_Free_Count, n_clst - 1); /* Number of free clusters */
+ ST_DWORD(tbl+FSI_Nxt_Free, 2); /* Last allocated cluster# */
+ ST_WORD(tbl+BS_55AA, 0xAA55);
+ disk_write(drv, tbl, b_vol + 1, 1); /* Write original (VBR+1) */
+ disk_write(drv, tbl, b_vol + 7, 1); /* Write backup (VBR+7) */
}
- return (disk_ioctl(drv, CTRL_SYNC, (void*)NULL) == RES_OK) ? FR_OK : FR_DISK_ERR;
+ return (disk_ioctl(drv, CTRL_SYNC, (void*)0) == RES_OK) ? FR_OK : FR_DISK_ERR;
}
#endif /* _USE_MKFS && !_FS_READONLY */
/*-----------------------------------------------------------------------*/
/* Get a string from the file */
/*-----------------------------------------------------------------------*/
-char* f_gets (
- char* buff, /* Pointer to the string buffer to read */
- int len, /* Size of string buffer */
- FIL* fil /* Pointer to the file object */
+TCHAR* f_gets (
+ TCHAR* buff, /* Pointer to the string buffer to read */
+ int len, /* Size of string buffer (characters) */
+ FIL* fil /* Pointer to the file object */
)
{
- int i = 0;
- char *p = buff;
+ int n = 0;
+ TCHAR c, *p = buff;
+ BYTE s[2];
UINT rc;
- while (i < len - 1) { /* Read bytes until buffer gets filled */
- f_read(fil, p, 1, &rc);
- if (rc != 1) break; /* Break when no data to read */
+ while (n < len - 1) { /* Read bytes until buffer gets filled */
+ f_read(fil, s, 1, &rc);
+ if (rc != 1) break; /* Break on EOF or error */
+ c = s[0];
+#if _LFN_UNICODE /* Read a character in UTF-8 encoding */
+ if (c >= 0x80) {
+ if (c < 0xC0) continue; /* Skip stray trailer */
+ if (c < 0xE0) { /* Two-byte sequense */
+ f_read(fil, s, 1, &rc);
+ if (rc != 1) break;
+ c = ((c & 0x1F) << 6) | (s[0] & 0x3F);
+ if (c < 0x80) c = '?';
+ } else {
+ if (c < 0xF0) { /* Three-byte sequense */
+ f_read(fil, s, 2, &rc);
+ if (rc != 2) break;
+ c = (c << 12) | ((s[0] & 0x3F) << 6) | (s[1] & 0x3F);
+ if (c < 0x800) c = '?';
+ } else { /* Reject four-byte sequense */
+ c = '?';
+ }
+ }
+ }
+#endif
#if _USE_STRFUNC >= 2
- if (*p == '\r') continue; /* Strip '\r' */
+ if (c == '\r') continue; /* Strip '\r' */
#endif
- i++;
- if (*p++ == '\n') break; /* Break when reached end of line */
+ *p++ = c;
+ n++;
+ if (c == '\n') break; /* Break on EOL */
}
*p = 0;
- return i ? buff : NULL; /* When no data read (eof or error), return with error. */
+ return n ? buff : 0; /* When no data read (eof or error), return with error. */
}
/* Put a character to the file */
/*-----------------------------------------------------------------------*/
int f_putc (
- int chr, /* A character to be output */
- FIL* fil /* Ponter to the file object */
+ TCHAR c, /* A character to be output */
+ FIL* fil /* Pointer to the file object */
)
{
- UINT bw;
- char c;
+ UINT bw, btw;
+ BYTE s[3];
#if _USE_STRFUNC >= 2
- if (chr == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
+ if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
#endif
- if (!fil) { /* Special value may be used to switch the destination to any other device */
- /* put_console(chr); */
- return chr;
- }
- c = (char)chr;
- f_write(fil, &c, 1, &bw); /* Write a byte to the file */
- return bw ? chr : EOF; /* Return the result */
+
+#if _LFN_UNICODE /* Write the character in UTF-8 encoding */
+ if (c < 0x80) { /* 7-bit */
+ s[0] = (BYTE)c;
+ btw = 1;
+ } else {
+ if (c < 0x800) { /* 11-bit */
+ s[0] = (BYTE)(0xC0 | (c >> 6));
+ s[1] = (BYTE)(0x80 | (c & 0x3F));
+ btw = 2;
+ } else { /* 16-bit */
+ s[0] = (BYTE)(0xE0 | (c >> 12));
+ s[1] = (BYTE)(0x80 | ((c >> 6) & 0x3F));
+ s[2] = (BYTE)(0x80 | (c & 0x3F));
+ btw = 3;
+ }
+ }
+#else /* Write the character without conversion */
+ s[0] = (BYTE)c;
+ btw = 1;
+#endif
+ f_write(fil, s, btw, &bw); /* Write the char to the file */
+ return (bw == btw) ? 1 : EOF; /* Return the result */
}
/* Put a string to the file */
/*-----------------------------------------------------------------------*/
int f_puts (
- const char* str, /* Pointer to the string to be output */
+ const TCHAR* str, /* Pointer to the string to be output */
FIL* fil /* Pointer to the file object */
)
{
/*-----------------------------------------------------------------------*/
int f_printf (
FIL* fil, /* Pointer to the file object */
- const char* str, /* Pointer to the format string */
+ const TCHAR* str, /* Pointer to the format string */
... /* Optional arguments... */
)
{
va_list arp;
- UCHAR c, f, r;
- ULONG val;
- char s[16];
- int i, w, res, cc;
+ BYTE f, r;
+ UINT i, j, w;
+ ULONG v;
+ TCHAR c, d, s[16], *p;
+ int res, cc;
va_start(arp, str);
for (cc = res = 0; cc != EOF; res += cc) {
c = *str++;
if (c == 0) break; /* End of string */
- if (c != '%') { /* Non escape cahracter */
+ if (c != '%') { /* Non escape character */
cc = f_putc(c, fil);
if (cc != EOF) cc = 1;
continue;
c = *str++;
if (c == '0') { /* Flag: '0' padding */
f = 1; c = *str++;
+ } else {
+ if (c == '-') { /* Flag: left justified */
+ f = 2; c = *str++;
+ }
}
- while (c >= '0' && c <= '9') { /* Precision */
- w = w * 10 + (c - '0');
+ while (IsDigit(c)) { /* Precision */
+ w = w * 10 + c - '0';
c = *str++;
}
- if (c == 'l') { /* Prefix: Size is long int */
- f |= 2; c = *str++;
- }
- if (c == 's') { /* Type is string */
- cc = f_puts(va_arg(arp, char*), fil);
+ if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
+ f |= 4; c = *str++;
+ }
+ if (!c) break;
+ d = c;
+ if (IsLower(d)) d -= 0x20;
+ switch (d) { /* Type is... */
+ case 'S' : /* String */
+ p = va_arg(arp, TCHAR*);
+ for (j = 0; p[j]; j++) ;
+ res = 0;
+ while (!(f & 2) && j++ < w) res += (cc = f_putc(' ', fil));
+ res += (cc = f_puts(p, fil));
+ while (j++ < w) res += (cc = f_putc(' ', fil));
+ if (cc != EOF) cc = res;
continue;
+ case 'C' : /* Character */
+ cc = f_putc((TCHAR)va_arg(arp, int), fil); continue;
+ case 'B' : /* Binary */
+ r = 2; break;
+ case 'O' : /* Octal */
+ r = 8; break;
+ case 'D' : /* Signed decimal */
+ case 'U' : /* Unsigned decimal */
+ r = 10; break;
+ case 'X' : /* Hexdecimal */
+ r = 16; break;
+ default: /* Unknown type (passthrough) */
+ cc = f_putc(c, fil); continue;
+ }
+
+ /* Get an argument and put it in numeral */
+ v = (f & 4) ? va_arg(arp, long) : ((d == 'D') ? (long)va_arg(arp, int) : va_arg(arp, unsigned int));
+ if (d == 'D' && (v & 0x80000000)) {
+ v = 0 - v;
+ f |= 8;
}
- if (c == 'c') { /* Type is character */
- cc = f_putc(va_arg(arp, int), fil);
- if (cc != EOF) cc = 1;
- continue;
- }
- r = 0;
- if (c == 'd') r = 10; /* Type is signed decimal */
- if (c == 'u') r = 10; /* Type is unsigned decimal */
- if (c == 'X') r = 16; /* Type is unsigned hexdecimal */
- if (r == 0) break; /* Unknown type */
- if (f & 2) { /* Get the value */
- val = (ULONG)va_arg(arp, long);
- } else {
- val = (c == 'd') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int);
- }
- /* Put numeral string */
- if (c == 'd') {
- if (val & 0x80000000) {
- val = 0 - val;
- f |= 4;
- }
- }
- i = sizeof(s) - 1; s[i] = 0;
+ i = 0;
do {
- c = (UCHAR)(val % r + '0');
- if (c > '9') c += 7;
- s[--i] = c;
- val /= r;
- } while (i && val);
- if (i && (f & 4)) s[--i] = '-';
- w = sizeof(s) - 1 - w;
- while (i && i > w) s[--i] = (f & 1) ? '0' : ' ';
- cc = f_puts(&s[i], fil);
+ d = (TCHAR)(v % r); v /= r;
+ if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
+ s[i++] = d + '0';
+ } while (v && i < sizeof(s) / sizeof(s[0]));
+ if (f & 8) s[i++] = '-';
+ j = i; d = (f & 1) ? '0' : ' ';
+ res = 0;
+ while (!(f & 2) && j++ < w) res += (cc = f_putc(d, fil));
+ do res += (cc = f_putc(s[--i], fil)); while(i);
+ while (j++ < w) res += (cc = f_putc(' ', fil));
+ if (cc != EOF) cc = res;
}
va_end(arp);
projects / pub / USBasp.git / blobdiff